Cornerstone Defense | Technically Innovative Solutions

Type: Contract
Job #3889

Software Engineer
Aurora, CO
TS/SCI w/ Poly
Compensation Range: $85,000 – $115,000

Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Job Responsibilities:
• Supports troubleshooting, maintenance, and documentation of software applications
• Expected to troubleshoot and isolate sources of system errors or unexpected performance
• Performs testing, integration and delivery of new software baselines
• Ability to perform in-depth analysis and assessment with an end-to-end perspective of a complex system in operations
• Active and transferrable TS/SCI with polygraph U.S. government issued clearance is required prior to start date
Basic Quals:
• Typically requires a Bachelor's Degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 2 years of prior relevant experience
• Experience with coding software in Java, or C++
• Experience in software development and/or software integration
Preferred Quals:
• Experience with software configuration management systems such as git or bitbucket
• Ability to work in a structured configuration-controlled environment, primarily focused on the support and maintenance of real-time software applications on an Operations and Maintenance (O&M) contract
• Linux/Unix, GIT, and SQL experience
• JIRA, BitBucket and Confluence experience desired

Type: Contract
Job #3888

Software Engineer
Aurora, CO
TS/SCI w/ Poly
Compensation Range: $125,000 – $155,000

Job Responsibilities:
• Supports troubleshooting, maintenance, and documentation of software applications
• Expected to troubleshoot and isolate sources of system errors or unexpected performance
• Performs testing, integration and delivery of new software baselines
• Ability to perform in-depth analysis and assessment with an end-to-end perspective of a complex system in operations
• Active and transferrable TS/SCI with polygraph U.S. government issued clearance is required prior to start date
Basic Quals:
• Typically requires a Bachelor's Degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of prior relevant experience
• Experience with coding software in Java, or C++
• Experience in software development and/or software integration
Preferred Quals:
• Experience with software configuration management systems such as git or bitbucket
• Ability to work in a structured configuration-controlled environment, primarily focused on the support and maintenance of real-time software applications on an Operations and Maintenance (O&M) contract
• Linux/Unix, GIT, and SQL experience
• JIRA, BitBucket and Confluence experience desired

Type: Contract
Job #3887

Systems Engineer
Aurora, CO
TS/SCI
Compensation Range: $85,000 – $115,000

Job Responsibilities:
• Analyze and define how the system works creating use cases
• Decompose requirements, define system interfaces and help determine how requirements will be validated and verified by the test team
• Provide engineering support for the execution of a portion of the programs test program including test processes and baseline definition and test architecture design
• Support regression testing across deliverable releases to the program baseline
• Support and attend technical reviews and technical interchanges in support of the program
Basic Quals:
• Typically requires a Bachelor's Degree in Systems, Mechanical, Aerospace, or Electrical Engineering, or a related field and minimum 2+ years of prior relevant experience
• Experience with systems engineering lifecycle, roles and functions, with specific experience in one or more of the following areas: Concept of Operations (ConOps) development, requirements definition and management, functional analysis or interface definition and control
• Development experience on a government contract with experience in systems engineering
• Experience with Agile principles, to include Agile systems engineering practices and understanding of Agile roles
• Development experience in project domain (e.g., mission management ground systems, space-based ISR platforms)
• Experience working in an Agile development environment and with Agile development tools (e.g., Jira, Confluence, Bitbucket, etc.)
• Active TS/SCI Security clearance
Preferred Quals:
• Experience with MBSE tools (e.g., Cameo Systems Modeler)
• Experience with requirements management in DOORS or other requirements databases
• Good oral and written communication skills as well as good collaboration skills and the ability to work in a team environment

Type: Contract
Job #3886

System Safety Engineer
Aurora, CO
Active Secret
Compensation Range: $150,000 – $190,000

Job Responsibilities:
• Design of concise, testable safety requirements or providing safety analysis of existing requirements
• Performing System Safety Program or Design analyses
• Placement in challenging or under-performing programs with the expectation of improvement of the safety program
• Managing multiple-large system safety programs or a safety product line
• Collaborating with other disciplines during program technical execution
• Interfacing with key stakeholders (e.g. customers, program offices, subcontractors, vendors)
• Mentoring Multiple Jr. Engineers
• Preparing Safety Assessment Reports and Safety Program Briefs for Customer Approval
• Streamlining processes and reports across a product line for improved efficiency
• Briefing safety of the program at technical reviews and as part of the safety approval process
• Interpreting system requirements, customer specifications and military standards
• Preparing internal and customer reports describing various analyses relevant to the System Safety program
• Collaborating across multiple disciplines to gain a full understanding of product architecture and design On-Site Means they will be working at a Raytheon Facility.

Qualifications:
• Typically Requires: Bachelor's degree and 8 years of relevant experience OR an Associate’s degree and 10 years of relevant experience OR an advanced degree in a related field and minimum 5 years’ experience. In absence of a degree, 12 years of relevant experience is required.
• Experience with: System Safety Engineering, System Engineering, Software or Firmware Engineering, or equivalent Safety Engineering experience in areas such as Aerospace, Automotive or Medical Device.
• The ability to obtain and maintain a US security clearance. US citizenship is required as only US citizens are eligible for a security clearance
• System thinking and the desire to influence the program as a whole
• Experience with industry System Safety Programs (especially in DoD or Aerospace fields) • Strong written, verbal and presentation skills
• Strong interpersonal and project management skills, with the ability to manage a safety program and provide direction to supporting safety personnel
• Degree in Science, Technology, Engineering or Mathematics (STEM)
• Experience working with US Military programs
• Strong analytical and problem solving skills

Type: Contract
Job #3885

Software Engineer
Aurora, CO
Active TS/SCI
Compensation Range: $175,000 – $200,000

Job Responsibilities:
• A breadth of advanced software technologies and techniques including multi-tiered architectures, AWS web services, and microservice software design.
• Modern DevSecOps and Continuous Integration/Continuous Delivery techniques.
• Software lifecycle practices for large-scale defense projects.
• Satellite ground system technologies including command & telemetry, flight dynamics, planning and scheduling, and spacecraft operations.

Basic Qualifications:
• Requires a Bachelor’s degree in Science, Technology, Engineering or Mathematics (STEM) and 10 years of relevant software engineering experience.
• Experience developing object-oriented software using Java and C++.
• Experience developing software in a Linux environment.
• Experience with Atlassian tools such as Confluence, Jira, and Bitbucket.
• Experience developing software on the M2C2 or Rushmore program
• An active and transferable U.S. government issued TS/SCI security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Preferred Qualifications:
• Software development lifecycle experience using the SAFe Agile methodology.
• Experience developing software using Python.
• Experience with AMMP, Cucumber, GIT, Khaos (M2C2 FD), Kubernetes, Oracle, Postgres, SonarQube, Weblogic, WIGS/Angular.
• Experience with cybersecurity, DevSecOps, and CI/CD processes.
• Experience working with full stack development.

Location: Dahlgren, Virginia
Type: Contract
Job #3884

Title: Technical Support Specialist
Location: Dahlgren, VA
*Clearance: *Active Secret Clearance needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *

Two (2) years of related IT/Help Desk Support experience

Technical Proficiency

Networking concepts, protocols, and security methodologies
System performance and availability monitoring
Network access, identity, and access management (e.g., PKI)
Remote access technologies
Systems administration concepts
Common network tools (ping, traceroute, nslookup)
Electronic device functionality (computers, network components, peripherals)
OS command line execution (ipconfig, netstat)
Cloud computing service/deployment models (SaaS, IaaS, PaaS)
Network protocols (TCP/IP, DHCP, DNS)

Security Awareness

Cybersecurity principles, threats, and vulnerabilities
National/international cybersecurity laws, regulations, and ethics
Organizational IT security policies (account management, access control)
Data security standards (PII, PCI, PHI)
Information classification, compromise procedures, and incident management processes

Support & Service Delivery

Risk management (assessment and mitigation)
Incident data analysis and trend identification
Service desk best practices
Customer service and communication skills
Technical training development and delivery
Incident tracking and solution database management
Trouble ticketing system utilization (incident, problem, event documentation)
SOP development and maintenance

Location: Dahlgren, Virginia
Type: Contract
Job #3883

Title: Systems Administrator
Location: Dahlgren, VA / San Diego, CA / Norfolk, VA (3 different locations)
*Clearance: *Active Secret w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Four (4) years of system management experience

Network Infrastructure

Networking concepts, protocols, and security methodologies
LAN/WAN architecture and pathways
Bandwidth management principles
Network traffic flow (TCP/IP, OSI, ITIL)
Performance tuning tools and techniques
Remote access technologies
VPN security
Network protocols (TCP/IP, DHCP, DNS, directory services)
Common tools (ping, traceroute, nslookup)
File system implementations (NTFS, FAT, EXT)
Virtualization technologies and VM management

Security Expertise

IT security principles (firewalls, DMZs, encryption)
Network security architecture (topology, protocols, defense-in-depth)
Cybersecurity principles, threats, and vulnerabilities
National/international cybersecurity laws, regulations, and policies
Organizational IT security policies (account management, access control)
Data security standards (PII, PCI, PHI)
System administration, network, and OS hardening techniques
Software-based protection tools (firewalls, antivirus, anti-spyware)
Transmission methods (Bluetooth, RFID, IR, Wi-Fi) and jamming techniques

System Administration

Server and client operating systems
Systems administration concepts and best practices
Enterprise IT architecture
Diagnostic tools and fault identification
OS command line utilities (ipconfig, netstat, dir, nbtstat)
System maintenance procedures (cleaning, disk checks, reboots, backups)

Cloud Computing

Service models (SaaS, IaaS, PaaS)
Deployment models (private, public, hybrid)
Cloud security strategy and architecture

Location: Dahlgren, Virginia
Type: Contract
Job #3882

Title: Information Systems Security Analyst
Location: Dahlgren, VA
*Clearance: *Active Secret Clearance needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Four (4) years of experience in Cybersecurity.

Core Competencies

Cybersecurity principles, threats, vulnerabilities, and risk management processes
Encryption algorithms (IPSEC, AES, GRE, IKE, MD5, SHA, 3DES)
Data backup/recovery tools and disaster recovery planning
Host/network access controls (ACLs)
Incident response and intrusion detection methodologies
Network traffic analysis and protocols (TCP/IP, OSI, ITIL)
System/application threats (buffer overflow, cross-site scripting, SQL injection)
Security architecture and enterprise reference models
National/international cybersecurity laws, policies, and ethics
Penetration testing principles, tools, and techniques

Technical Proficiency

Networking concepts, protocols, and security methodologies
System performance monitoring and ISO standards
System life cycle management, software security, usability
System/server administration and engineering methods
Server/client operating systems
Network security architecture (topology, defense-in-depth)
Network systems management tools
System administration, network, and OS hardening techniques
Cloud computing models (SaaS, IaaS, PaaS) and cloud security strategies
Data security standards (PII, PCI, PHI)

Leadership & Management

Information security and project management principles
Resource management techniques
Risk assessment and mitigation processes
Secure acquisitions, procurement, and supply chain risk management
IT supply chain security and compliance with laws, directives, and guidelines
Organizational risk tolerance and management approaches
Critical IT procurement requirements

Location: Dahlgren, Virginia
Type: Contract
Job #3881

Title: Program Manager (PM)
Location: Dahlgren, VA

*Clearance: *Active Top Secret Clearance needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Five (5) years of experience in Contract Management.
Current PMP Certification
Familiarity with Navy Network systems design, development, test and evaluation, and training of systems.
Overseeing both the technical and administrative aspects of Government contract performance.
Oversight of timeliness and quality of contract service and data deliverables.
Oversight of contract schedule and cost.
Experience as a manager of a team of skilled professional, technical, and support personnel involved in Navy Network.
Demonstrated ability to interface effectively with customers and to deliver quality products on time and within budget.
Demonstrated ability to plan, design, coordinate, control the progress of project work to meet sponsor objectives, and manage a diverse technical workforce and team consisting of multiple skill sets.

Type: Contract
Job #3877

Software Engineer
State College, PA
Active TS/SCI
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

In the Java/Python AI/ML/Data Science Software Engineering role, you will design, develop, and test AI/ML, Java and Python code in a Linux, Agile, DevOps environment. We are at the forefront of aerospace and defense technology. Our Satellite Ground Systems Team plays a pivotal role in ensuring communication, surveillance, and defense capabilities through cutting-edge satellite systems. We invite you to be part of a team that pushes the boundaries of what's possible. Due to the security clearance requirement, this is an onsite position in our State College, PA office.

Responsibilities:
• Design, develop, and maintain advanced software applications for our Satellite Ground Systems.
• Collaborate closely with systems engineers, hardware designers, and other software engineers to deliver reliable and high-performance software solutions.
• Design, implement, and test AI, ML, Java and Python based applications and software components for satellite ground systems.
• Work in parallel with legacy platform teams to eventually migrate workloads onto your pipelines.
• Collaborate with cross-functional teams to define software requirements and specifications.
• Work with previously written code and make modifications as necessary.
• Ensure software performance, reliability, and scalability.
• Participate in software design reviews, code reviews, and system integration activities.
• Contribute to the completion of program and project milestones under the specific guidance of their immediate supervisor.
• Follow established Software processes and procedures, development, documentation and maintenance/management of operations concepts, requirements (system, element, segment level), external and internal interfaces, and other software engineering work products/artifacts.

Basic Qualifications:
• Active and transferable U.S. government issued TS/SCI security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and two (2) years of Software Engineering experience.
• Experience in object-oriented software design and development using Java and Python in a Linux environment.
• Experience with unit testing tools (e.g., JUnit).
• Exposure to AI/ML and Data Science.
• Experience working in an agile environment
Preferred Qualifications:
• Experience working in an AI/ML/Data Science role
•Strong analytical skills and proactive problem-solving abilities, with a deep understanding of AI/ML technologies, cloud architecture, and enterprise software.
• Experience working with large datasets and performing data analysis.
• Security+ certification.
• Experience with Git, Jenkins, Docker, Kubernetes.
• Experience with the Atlassian Tool Suite (e.g. JIRA, Confluence, BitBucket).
• Experience with cloud computing platform (e.g. AWS or Azure).
• Experience with satellite communication systems and protocols is highly preferred.
• Familiarity with secure coding practices, especially in a defense or aerospace setting.

Location: Tysons, Virginia
Type: Contract
Job #3872

Title: Information Systems Security Engineer
Location: Tysons, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Description: The Information Systems Security Engineer supports the client and the team in defining security requirements; advises on, executes and oversees cybersecurity, information assurance (IA) programs, authority to operate (ATO), accreditation and authorization (A&A), User Activity Monitoring (UAM), and system security plans.
Responsibilities:

Lead for automated security testing efforts leveraging Sponsors enterprise scanning tools
Responsible for creation and delivery of the Monthly Vulnerability Scans
Responsible for creation and delivery of the Monthly Privileged Users and Admin report
Overall Lead for ensuring systems are secure by protecting data and ensuring need to know
Responsible for working with Tech team on creating any necessary POAM's
Helps PM with the Contract Security Plan
Works with PM and Sponsor's Information System Security Manager and INFOSEC Program Council as necessary
Authors and maintains the programs System Security Plan (SSP) for A&A
Provides the required security education and plan to sponsor for the program
Authors and maintains the programs Automated Information Systems (AIS) Plan

Required Skills:

4-7 years’ experience with:
Application security standards and processes
Accreditation and Authorization (A&A), including documentation, POAMs, and remediation
Application and data security requirements for authorities to develop and operation systems (ATD, ATO) such as encryption, role-based security, information assurance, and monitoring/auditing/reporting
Coordination with engineering team to implement security requirements
Agile / Scrum

Type: Contract
Job #3870

Infrastructure Engineer – Level 5 (Senior Platform Engineer)
Richardson, TX
TS/SCI

Cornerstone Defense is seeking a Principal Platform Engineer with well-rounded Linux Infrastructure Engineering expertise to join an agile product team. The Ideal candidate will have experience in both traditional infrastructure design; provisioning of platform, storage, and networking resources for existing on-premise infrastructure that ideally also has experience in emerging DevOps/DevSecOps & Modernized technologies. The Senior Platform Engineer would be engaged in the design and implementation of the system updates and upgrades with Focus on the Linux Server / Linux OS expertise and will support Technical Exchange Meetings (TEMs) and provide project status as required.

The Senior Platform Engineer would be involved with development, implementation of traditional compute/network/storage systems and related deployments, as well as support improving the program platform’s over-arching design through new emerging technologies. This includes existing operating systems and existing server hardware designs, as well as supporting the design and development of new modernized system architectures through Automation tools.

Responsibilities:

You will leverage company and industry best practices and capabilities to develop and communicate implementation, of infrastructure solutions.
You will maintain existing systems through Linux Based Tools and manage the COTS stack on the system to support program needs.
You will Utilize various scripting and Automation tools to develop and maintain the program’s infrastructure.
You will ensure that the COTS stack and versioning is consistent across the platform; and will work with the team to make updates as necessary.

Qualifications:

Typically requires BS/BA Degree in Science, Technology Engineering Math (STEM) in Computer Science, Computer Engineering, Information Technology or Physics and 8 years of related work experience
Current TS/SCI issued security clearance is required day 1. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
Hands on Experience with Linux Operating System
Scripting skills: Bash, Python, Java, Perl, Ruby, Tcl/Tk
Experience with markup languages: YML, XML, JSON
Experience with automation tools: Ansible, Terraform, Jenkins, Bitbucket
Proficient with MS Office suite: Word, Excel, PowerPoint, Visio

Desired Skills:

Familiar with container orchestration: Kubernetes, Docker, Podman, Helm, Rancher
Familiar with Lightweight Directory Access Protocol (LDAP)
Familiar with Information Technology Service Management tools: ServiceNow, Atlassian (Jira, Confluence)
Familiar with Agile project management, Scrum methodology
A Background in Systems Operations or Engineering; supporting large complex Information Technology environment.
A Current Poly Is strongly desired for this role in order to get Privilege User access to systems.

Location: Chantilly, Virginia
Type: Contract
Job #3869

Title: Systems Engineer
Location: Chantilly, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

The office independently operates a hybrid-cloud mission infrastructure hosting applications and a large data lake, requiring them to manage all infrastructure components and enterprise services like Active Directory. The office requires support specializing in systems engineering and IT project management to guide systems through security accreditation and create essential documentation, including System Security Plans and SOPs. System Engineers will decompose customer requirements into technical solutions, considering architectural impacts, performance, and life cycle costs, while also assisting with project estimation, scheduling, and cost of cloud solutions. The team is responsible for managing the storage, security, and maintenance of data, including patching, upgrades, and monitoring the physical infrastructure.

Demonstrated experience using forensic software such as Cellebrite, XRY, WinHex, FTK, and Autopsy.
Demonstrated experience utilizing bash scripting, and bash command lines using Ubuntu and RedHat.
Demonstrated experience using Storage system installation design and architecture in multi-petabyte environments.
Demonstrated experience using various instances of Windows – troubleshooting, patching, updates, managing active directing, supporting users and supporting security posture.
Demonstrated experience installing, maintaining, and configuring Aspera Enterprise Server and Aspera P2P.
Demonstrated experience maintaining, configuring, administering Mongo Databases.
Demonstrated experience analyzing existing systems and identifying necessary corrective actions and improvements.
Demonstrated hands on experience performing server installation, rack or capacity planning, facility and space management, equipment commissioning and decommissioning.
Demonstrated ability to create and maintain SOP documentation used by technical and non-technical personnel.
Demonstrated ability to teach digital forensics to large audiences of diverse backgrounds.
Demonstrated experience creating, maintaining and sharing curated work data.
Demonstrated experience providing aftercare support, such as integration support for previously installed software and programs.
Demonstrated experience performing tier 1 thru tier 3 support, including both systems troubleshooting and incident tracking and management.
Demonstrated hands on experience serving as an Engineering Lead, coordinating, scheduling, deconflicting, and resolving conflicts between IT engineering projects.
Demonstrated experience using Sponsor’s digital forensic triage application.

Location: Annapolis Junction, Maryland
Type: Contract
Job #3868

Title: Virtualization-Savvy CNO Developer
Location: Annapolis Junction, MD
Compensation Range: $180 -$200K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Overview:
We are seeking a highly motivated and technically skilled CNO Developer to join our Virtualization Team supporting mission-critical cyber operations. The ideal candidate will have a strong foundation in low-level systems programming, embedded development, and Windows internals, with a passion for solving complex technical challenges in secure and virtualized environments.

Core Tasks:

Develop and maintain low-level software in C, targeting Windows platforms and embedded systems.
Apply deep understanding of Windows internals to support the development of stealthy and resilient capabilities.
Implement and optimize memory management techniques for performance and stability in constrained environments.
Analyze and implement network protocols, including secure communication layers such as SSL/TLS.
Perform reverse engineering and debugging of binaries to identify issues, understand behavior, and enhance functionality.
Collaborate with team members to integrate capabilities into virtualized environments and support mission deployment.
Participate in code reviews, documentation, and technical discussions to ensure high-quality deliverables.

Desired Skills:

Experience with Python for scripting, automation, or rapid prototyping.
Familiarity with virtualization technologies (e.g., VMware, Hyper-V, KVM).
Exposure to malware analysis, exploit development, or CNO toolchains.

Qualifications:

Minimum 3 years of experience in CNO-related work.
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity

Location: Reston, Virginia
Type: Contract
Job #3865

Title: Business Process Analyst
Location: Chantilly, Virginia
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Company Overview:

Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through the use of many different types of intelligence, satellite, and cyber technologies. Cornerstone’s Intelligence Sector provides solutions to the United States Government for information collection, operations, exploitation and dissemination, and research activities. Our Team specializes in software development, cloud architecture, systems and network engineering, systems integration, agile management, as well as targeting operations and intelligence analysis. Our support to our mission customers includes cyber network operations, exploitation and defense, signals intelligence, human intelligence, and critical missions and networks.

Business Process Analyst
FSP is a requirement
——

Seeking a Business Process Analyst responsible for creating, documenting, maintaining, developing, and enhancing client-specific business processes and rules databases, also known as the Knowledgebase (KB). This position provides documentation, analysis, and configuration services to reflect updates for regulatory and acquisition policy, customer-specific business processes, and other enhancements to Clent’s solutions.

As a member of an integrated team, the Business Process Analyst also participates in the operation of Client’s Level 1 Help Desk. Overall, this position is responsible for proactively and collaboratively working with project managers, teams, and other organizational groups in a tactical capacity, evaluating internal and external client requirements, and implementing practical solutions promptly.

Job Duties:

Develop and maintain a fundamental understanding of Federal Acquisition Regulation (FAR), policies, and practices. Maintain currency with FAR policies and practices by attending continuing education courses, participating in research assignments, and self-initiated exploration of related publications
Develop the skills required to maintain, enhance, and test client agency KBs by gaining a complete understanding of team procedures and toolsets, and through the successful completion of staff training exercises and individual KB assignments (tasks)
Perform Knowledgebase configurations, logic, implementation, and business process verification/testing
Analyze Regulatory changes and determine their impact on client products
Analyze business and user needs, document user requirements, and translate into accurate specifications
Achieve proficiency in all major client products, including the AAMS software suite, through internal staffing training, self-guided tutorials, and daily exposure to individual product feature sets
Obtain competency in Level I customer support functions and internal helpdesk procedures through call monitoring and participate in helpdesk activities/functions
All other duties as assigned

Required Skills:

2+ years prior work experience
Ability to work in a team-oriented environment for a matrixed organization
Functional knowledge of productivity tools such as Microsoft Office (Word, Excel, Outlook)
Excellent verbal and written communication skills
Ability to collaborate with internal and external customers
Demonstrated analytical capabilities

Desired Skills:

Knowledge of the Federal Acquisition lifecycle or commercial contracting
Knowledge of Federal financial systems or commercial accounting
Experience with Federal government contracting and/or program office organizations
Experience with logic structures

Type: Contract
Job #3862

Infrastructure Engineer
Aurora, CO
TS/SCI w/ Poly
Compensation Range: $130,000 – $150,000
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Responsibilities:

Support transitioning a system that is tightly coupled to the underlying infrastructure.
Assist with architecture, design, development, integration, and support of build, integration & test, and deployment pipelines, optimizing for performance and scalability across cloudbased computing environments.
Leverage company and industry best practices and capabilities to improve scalability, consistency, infrastructure efficiency, reduce deployment time, and automate configuration management.
Collaborate with software engineers, data scientists, and other agile development teams to design and implement robust platform solutions.
Integrate security and compliance into the platform with services such as encryption and access management.
Provide operational support for the platform

Basic Qualifications:

Typically requires BS/BA Degree in Science, Technology Engineering Math (STEM) in Computer Science, Computer Engineering, Information Technology or Physics and 5 years of related work experience
Experience designing, implementing, and integrating Cloud based systems on infrastructure platforms such as AWS.
Experience with automation frameworks such as Terraform, Ansible, and Chef
Experience with programming/scripting languages (E.g. Python, Java, Ruby, Bash, C++, C#, Go)
Must meet DoD 8570 IAT level II requirements (Security + CE or equivalent)
Active and current U.S. government TS/SCI with CI Poly security clearance is required day 1. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Preferred Qualifications

Experience deploying, configuring, and supporting CICD Pipelines tools (E.g. Jira, Confluence, Bit Bucket, Jenkins, Artifactory, Gitlab)
Experience with RedHat Linux Experience developing, testing & delivering applications w/in a DevSecOps framework
Experience with automation frameworks such as Terraform, Ansible, and Chef
Experience with scanning tools (E.g. Nessus, Fortify, Anchore)
Infrastructure experience with computers, networks, storage, and virtualization
Experience with cloud platforms such as AWS or Google cloud
Experience developing, testing & delivering applications w/in a DevSecOps framework
Experience with troubleshooting applications & infrastructure services on Linux based Operating Systems Background in COTS/FOSS product installation, configuration, and integration

Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.

Location: Annapolis Junction, Maryland
Type: Contract
Job #3861

Title: Software Engineer 4 (Hybrid)
Location: Annapolis Junction, MD
Compensation Range: $210 -$230K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Position Description:
The Software Engineer shall be responsible for developing and maintaining a system that manages access to HPC resources in a large multi-tenant containerized Kubernetes Linux environment.
Qualifications:
Master's degree in Computer Science or related discipline from an accredited college or university, plus ten (10) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
OR
Bachelor's degree in Computer Science or related discipline from an accredited college or university, plus twelve (12) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity
OR
Fourteen (14) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Requirements:

Experience using the Linux CLI
Experience developing and maintaining scripts using Bash/Python
Experience installing, configuring, and supporting COTS/GOTS/FOSS software, libraries, and packages in a Linux environment
Recent software development experience using Python
Experience designing and developing REST interfaces using FastAPI
Experience with containerization technologies such as Docker, PodMan, and containerd
Experience with container orchestration technologies including Kubernetes
Experience administering Kubernetes clusters in an AWS environment
Experience with IaC (Infrastructure as Code) concepts, principles and automation tools including Ansible and Terraform
Demonstrated experience using system monitoring tools such as Grafana/Prometheus
Experience with CI/CD principles, methodologies, and tools including GitLab
Experience using Git Version Control System

Position Desired Skills:

Experience with the Atlassian Tool Suite (JIRA, Confluence)
Familiarity with web technologies including JavaScript, HTML, CSS, and React
Familiar with HPC workload management systems including Slurm
Experience with ArgoCD, AirFlow, SQL, and JupyterLab
Familiar with stream/batch Big Data processing and analytic frameworks including Spark
Experience with Identity and Access Management (IAM) solutions including Keycloak

Location: Chantilly
Type: Contract
Job #3859

Software Developer – Workflow Automation

Chantilly, VA

Mission: We are looking for a Software Developer who thrives at the intersection of process and code. In this role, you won’t just be “fixing tickets”—you’ll be architecting the digital workflows that keep our mission moving. You will work within a high-velocity team to transform complex functional requirements into elegant, automated business logic.

Required Technical Background:

Languages: JavaScript (Essential), HTML5, CSS3, XML
Primary Platform: ServiceNow (Experience in Appian, Jira Service Management, or Power Automate is highly transferable)
Integration: REST/SOAP APIs,
Frameworks: ITIL Framework

What You’ll Do:

Build & Automate: Develop and maintain end-to-end workflows, custom forms, business logic, and UI policies that streamline enterprise operations.
Collaborate: Work under the guidance of a Technical Team Lead to hit roadmap milestones, while partnering with Functional Analysts to turn “vague ideas” into “unit-tested reality.”
Integrate: Design and implement APIs to ensure our automation platform plays nicely with the rest of the enterprise ecosystem.
Refine: Participate in peer reviews, conduct unit testing, and lead demos to showcase new features to stakeholders.

Required Qualifications:

JavaScript (Angular) Mastery: Strong experience scripting within a workflow automation environment (ServiceNow is preferred, but we value expertise in similar low-code/pro-code platforms).

Type: Contract
Job #3851

Senior Data Engineer
Tysons Corner, VA
Active TS/SCI with Poly

Job Responsibilities:

Work with AI team members to operationalize data pipelines and ML tasks.
Provide day-to-day support of deploying Python-native ML pipelines and perform data engineering tasks to enable AI/ML capabilities.
Present results to a diverse audience in presentation or report form.
Support architectural leadership, technical support, and advisement services to ensure identity management system technologies are integrated and meeting the appropriate security requirements.
Support leadership who engage with senior level executives at a public facing Federal agency and provide subject matter expertise in security architecture and other key domain areas.

Required Skills:

Minimum 10 years experience
Bachelor's Degree in Computer Science, Information Technology Management or Engineering, or other comparable degree or experience
8+ years of experience in Data/ML engineering
Expert Experience with ETL, data labeling, and data preparation
8+ years experience with at least 2 of the following technologies: Cloudera, DataBricks, Snowflake, NiFi, Python, SQL, Kafka
Expert experience designing, developing, and deploying data solutions in classified AWS cloud environments up to IL6+
Expert experience designing, implementing, and maintaining data architecture and services to be used for AI/ML. Additionally, operationalizing and maintaining AI/ML models in production.
Strong communication skills, ability to communicate technical concepts in both layman and technical terms to technical and non-technical stakeholders
Ability to perform data analytics on program related or system related activities. -This will include assessing performance and manual processes implementing methods/algorithms to automate/optimize

Type: Contract
Job #3847

Data Engineer
Tysons Corner, VA
Active TS/SCI with Polygraph

Job Responsibilities:

As a Sr. Data Engineer, you’ll work with team members to build, deploy, and operate data pipelines and data engineering components to enable data brokering and exchange capabilities across a diverse range of producers and consumers. In this role, you will be responsible for building robust, scalable data pipelines while working collaboratively with cross-functional teams to ensure seamless integration, optimized performance, and efficient delivery of solutions.

Work with team members to operationalize data pipelines and supporting cloud infrastructure
Collaborate with external data producers and consumers to obtain and provide data through interfaces such as REST APIs and S3
Provide day-to-day support of deploying Python-native data pipelines and performing data engineering tasks to enable data brokering and exchange capabilities
Provide Tier 2/3 troubleshooting and incident resolution support for data pipelines in Production

Required Skills:

4+ years of proven experience in data engineering, with expertise in designing, developing, and maintaining data ingestion, transformation, and loading pipelines and components
Demonstrated experience in designing and deploying data pipelines leveraging AWS cloud infrastructure across multiple classification domains (e.g., IL5 to IL6+)
Experience with Infrastructure-as-Code (IaC) tools, including Terraform, CloudFormation, or Ansible, to automate deployment of data pipeline cloud infrastructure
Understanding of RMF security principles and hands-on experience implementing security controls for data pipelines in cloud environments
Strong scripting and programming skills in languages such as Go, Python, and Bash
Experience with data pipeline tools and technologies such as Nifi, Hadoop, HDFS, and Kafka. Experience implementing data pipelines in the Cloudera Data Platform environment is highly preferred.
Strong communication skills, with the ability to clearly convey complex technical concepts

Location: Chantilly, Virginia
Type: Contract
Job #3846

Tech CI Analyst
Chantilly, VA

*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Company Overview:

Tech CI Analyst
Level: Senior / Expert
Location: Chantilly / Dulles
Required:
Bachelor's Degree in a technically relevant field (4 years of additional relevant if not)
Active TS/SCI with poly
11 years providing technical all source intelligence and generating leads
5 years working with SIGINT and Cyber Ops
Strong knowledge and understanding of telecommunications
Demonstrated ability to write and dissem products

Type: Contract
Job #3844

Job Title: Web Developer
Location: Salt Lake City, UT
Duration: 6 months
Salary: $140K – $160K
Work Schedule: 9/80 work shift
Experience Level: Mid to Senior

Position Overview:
We are seeking a skilled Web Developer for a 6-month subcontract position based in Salt Lake City. This role involves developing complex, web-based forms that interact with Relational Database Management Systems (RDBMS). The ideal candidate will have mid to senior-level experience and be comfortable working in a fast-paced, collaborative environment.

Key Responsibilities:

Design and develop dynamic web forms using HTML, CSS, and JavaScript
Implement interactive features and client-side validation
Build and maintain server-side applications using Python, PHP, Java, Ruby, or Node.js
Utilize frameworks such as Django, Laravel, Spring, or Express
Design and manage database schemas; perform operations using SQL with MySQL, PostgreSQL, Oracle, SQL Server, or SQLite
Integrate web forms with backend services and databases for data processing and retrieval
Use ORM tools like SQLAlchemy, Hibernate, or Sequelize
Develop and manage RESTful or GraphQL APIs
Ensure data security through proper authentication, authorization, and secure coding practices
Provide user feedback and updates based on form submissions and database interactions

Additional Responsibilities:

Build complex web-based forms using Blazor, Visual Studio, and .NET
Develop applications using Microsoft Power Apps
Work with MS SQL Server Integration
(Nice-to-have) Interface with Microsoft Dynamics (CRM)

Qualifications:

Proficiency in front-end technologies: HTML, CSS, JavaScript, and frameworks like React, Angular, or Vue.js
Strong understanding of back-end development with Node.js, Python, PHP, Java, or Ruby
Experience with web frameworks such as Django, Laravel, Spring, or Express
Solid SQL skills and experience with major RDBMS platforms
Familiarity with ORM tools like SQLAlchemy, Hibernate, or Sequelize
Experience designing and implementing RESTful or GraphQL APIs
Ability to design and manage complex database schemas
Knowledge of secure coding practices and web security
Strong problem-solving skills and attention to detail
Excellent communication and collaboration abilities

Key Skills:

Blazor / Visual Studio / .NET
Microsoft Power Apps
MS SQL Server Integration

Preferred Qualifications:

Experience interfacing with Microsoft Dynamics (CRM)
Full-stack development experience
Familiarity with Git or other version control systems
Understanding of DevOps practices and CI/CD tools
Experience building scalable, high-performance web applications

Location: Chantilly, Virginia
Type: Contract
Job #3837

Software Engineer – Backend Solutions
JOB DESCRIPTION
We’re looking for a Software Engineer who is passionate about building modern, scalable solutions for ingesting and transforming data. This role blends back-end engineering with data pipeline development and is perfect for someone who enjoys designing modular services and bringing structure to complex data environments.

As part of our Agile team, you’ll design and develop software products and services that efficiently ingest, process, and manage data from a variety of sources. You’ll play a key role in building robust, reusable APIs and data pipelines that support critical operational and analytical systems.

KEY RESPONSIBILITIES

Design and develop scalable backend services and data ingestion solutions.
Perform data modeling, data mapping, and large-scale file manipulation.
Collaborate across disciplines in an Agile environment with minimal supervision.
Drive innovation and process improvement with a hands-on development approach.
Optimize application for maximum speed and scalability.

QUALIFICATIONS

Bachelor’s Degree in Computer Science, Electrical or Computer Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.

REQUIRED KNOWLEDGE/SKILLS

Knowledge of NodeJS or Python
Strong understanding of APIs, microservices, and distributed systems.
Solid experience in building and maintaining ETL workflows and data pipelines.
Excellent organizational, coordination, interpersonal and team building skills.
Familiarization with NoSQL datastores.

DESIRED KNOWLEDGE/SKILLS

NiFi experience
Hands-on experience working with Elastic and RabbitMQ
NoSQL experience (i.e. MongoDB)
Distributed architecture creation
Cloud based architecture creation or experience

Location: Reston, Virginia
Type: Contract
Job #3836

Help Desk Specialist – Lead
Springfield, VA
Active TS/SCI with CI Polygraph

Job Requirements:

Serve as the first point of contact for customers seeking technical assistance over a ticketing system.
Perform remote troubleshooting through diagnostic techniques and pertinent questions.
Determine the best solution based on the issue and details provided by customers.
Walk the customer through the problem-solving process.
Direct unresolved issues to the next level of support personnel.
Provide accurate information on IT products.
Record events and problems and their resolution in logs.
Follow-up and update customer status and information.
Pass on any feedback or suggestions by customers to the appropriate internal team.
Identify and suggest possible improvements on procedures.
Performs other related duties as assigned.

Required Experience:

Proven experience in Supporting COTS products in a customer support role.
Good understanding of computer systems, and other tech products.
Ability to diagnose and resolve basic technical issues.
Excellent communication skills.
Customer-oriented and cool-tempered.
Understanding of Ticketing systems.
Active Security+ certification.

Desired Experience:

Knowledge of the Federal Acquisition lifecycle or commercial contracting.
Knowledge of Federal financial systems or commercial accounting.
Experience with Federal government contracting and/or program office organizations.

Location: Colorado Springs, Colorado
Type: Contract
Job #3830

Senior System Administrator

Colorado Springs, CO

Active TS/SCI

$135,000 – $160,000 base salary

Company Overview:

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government.  Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission.  Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.  If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Job Responsibilities:

Support a mixed Windows/Linux environment on VMware vSphere and OpenStack.

Handle patching, monitoring, incidents, and change control with solid documentation.

Work well with the security team on hardening and remediation.

Comfortable with segmented networks/least-privilege designs and multi-site operations.

10+ years of experience across a broad range of Windows/Linux/Virtualization technologies in professional roles

Required Skills:

Active Directory user/group management, understanding of Group Policy

Managing DHCP and DNS on either Windows or Linux

STIG hardening concepts for servers, desktops, and network devices

Management of system updates/patches for Windows and/or Linux

Hands-on experience with virtualization; Linux KVM/OpenStack and/or vSphere

Experience with troubleshooting complex technical issues across multiple layers

Understanding of networking; including TCP/IP, VLANs, VPNs, firewall policies, basic routing

Desired Skills:

Experience managing OpenStack; including overcloud and undercloud updates and tenant management

SAN/NAS operations/concepts; iSCSI, NFS, SMB, snapshots, replication

Container creation/maintenance; utilizing Docker and/or Podman

Kubernetes operations; ability to troubleshoot issues in a cluster

Scripting and automation experience with Ansible, Bash, PowerShell, and/or Python

Familiarity with Cisco/Juniper CLIs and configurations

Experience managing Microsoft Exchange

Experience managing Microsoft Endpoint Configuration Manager

Company Benefits:

Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.

Location: Colorado Springs, Colorado
Type: Contract
Job #3829

Software and Systems Security Engineer
Colorado Springs, CO
TS/SCI
$150,000 – $180,000 base salary

Job Responsibilities:

Design, build, and maintain technology solutions and systems that provide security for on-prem systems, networks, and data. This can include:
- Authentication and identity services, including multi-factor solutions, network access control identity servers, and related authentication and authorization technologies.
- Network security systems and the backend infrastructure that powers such services.
- Application level security controls (e.g. web application firewalls)
- Enabling and enforcing Secure Coding pattern implementation, verification, and validation
- Cloud deployments security policy enforcement, centralized configuration management, monitoring, etc.
- Work collaboratively with Cybersecurity and IT teams to identify threats and problem areas, using that feedback to further strengthen tools and technologies.
- Create solutions that are scalable, repeatable, maintainable, and secure.
Assisting with Kubernetes deployments, troubleshooting, and improving security posture using Gitlab pipelines and ArgoCD GitOps patterns

Required Skills:

Development experience creating and deploying secure services in any modern programming language (including but not limited to Python, Rust, Go)
Strong familiarity with software development lifecycle (SDLC) processes and source control technologies
Familiarity with cloud security services, concepts, and best practices
Experience developing security architectures

Desired Skills:

Automating processes between tools and systems (using tools such as Ansible, Powershell, et al)
Familiarity with enterprise security controls and security best practices for Linux systems

Type: Contract
Job #3821

Title: Software Engineer
Location: Annapolis Junction, MD
Compensation Range: $165 -$185K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Summary:
InfiniteShadow requires a Software Engineer to perform foundational research, development, and prototyping that will exemplify real-world capabilities from the emerging applied cyber concepts research. The contractor shall create hardware and software component design specifications and use appropriate industry standard development methodologies and tools to implement those specifications. In addition to functionality features, the following shall be included in the designs: interfaces, security, performance, controls, databases, AI/ML, and user experience. The contractor shall test and document results in accordance with the Government approved test plan.

Qualifications:
Seven (7) years experience as a SWE, in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required.
Four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor’s degree.

Required Skills:

MySQL
JavaScript
Understanding of other dependency tools: Node.js, npm, Express, and multer
Rejit (Rejx – command-line interface Python library)

Desired Skills:

LLMs
Retrieval-Augmented Generation
CASPORT

Location: Annapolis Junction, Maryland
Type: Contract
Job #3820

Title: Software Engineer 3 (Automation)
Location: Annapolis Junction, MD
Compensation Range: $190 -$210K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Summary:
The Software Engineer shall be responsible for the development, enhancement, and sustainment of automation tools in support of system management infrastructure software and services for High Performance Computing (HPC) systems in a Linux environment.

Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity
OR
Nine (9) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.

Required Skills:

Experience using the Linux CLI
Experience using Linux tools and developing Bash scripts to automate manual processes
Recent software development experience using Python
Experience with automation frameworks including Ansible for orchestrating deployment
Experience with automated testing frameworks and methodologies such as TDD, BDD
Experience with CI/CD principles, methodologies, and tools such as GitLab CI and Jenkins
Experience with Git Source Control System

Desired Skills:

Experience with the Atlassian Tool Suite (JIRA, Confluence)
Familiar with Agile, Scrum, or Scaled Agile Framework (SAFe) methodologies

Location: Annapolis Junction, Maryland
Type: Contract
Job #3819

Title: Software Engineer 2 (Metrics & Monitoring)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Position Description
The DevOps Software Engineer shall be part of a team responsible for designing, developing and maintaining a comprehensive distributed Metrics and Monitoring solution for HPC systems to ensure the reliability, performance, and scalability of HPC infrastructure.

Position Required Skills

Experience using the Linux CLI
Experience using Linux tools and developing Bash scripts to automate manual processes
Recent software development experience using Python
Willingness to learn Splunk for data collection, message brokers, data storage, and presentation tools
Familiar interfacing with Log Management tools including Syslog-ng and rsyslog
Familiar Message Brokers such as Kafka
Experience with IaC (Infrastructure as Code) principles and automation tools including Ansible
Experience with CI/CD principles, methodologies, and tools such as GitLab CI
Experience with Git Source Control System

Position Desired Skills

Experience with the Atlassian Tool Suite (JIRA, Confluence)
Experience with Elasticsearch

Location: Annapolis Junction, Maryland
Type: Contract
Job #3817

Title: Software Engineer 2 (Permissions Management)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Position Description
The Software Engineer shall be responsible for implementing access controls and permission mechanisms for securing access to critical HPC system resources through robust permission management, ensuring compliance with the Agency’s security policies and industry standards.

Position Required Skills

Experience using the Linux CLI
Proficiency in scripting (Bash/Python) to automate tasks and processes
Basic Linux systems administration including User and Group Management
Experience implementing Access Controls and permissions including RBAC and HBAC in a Linux environment
Experience developing software solutions using the Python programming languages
Experience developing Ansible playbooks to orchestrate the automation of provisioning HPC hardware and software components
Experience with CI/CD principles, methodologies, and tools such as GitLab CI and Jenkins
Experience with Git Source Control System

Position Desired Skills

Experience with containerization technologies such as Docker, PodMan, containerd
Familiar with IAM solutions such as KeyCloak, FreeIPA, SSSD, LDAP, Kerberos
Experience with the Atlassian Tool Suite (JIRA, Confluence)
Familiar with Agile, Scrum, or Scaled Agile Framework (SAFe) methodologies

Title: Software Engineer 2 (Permission Management)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Position Required Skills

Experience using the Linux CLI
Proficiency in scripting (Bash/Python) to automate tasks and processes
Basic Linux systems administration including User and Group Management
Experience implementing Access Controls and permissions including RBAC and HBAC in a Linux environment
Experience developing software solutions using the Python programming languages
Experience developing Ansible playbooks to orchestrate the automation of provisioning HPC hardware and software components
Experience with CI/CD principles, methodologies, and tools such as GitLab CI and Jenkins
Experience with Git Source Control System

Position Desired Skills

Experience with containerization technologies such as Docker, PodMan, containerd
Familiar with IAM solutions such as KeyCloak, FreeIPA, SSSD, LDAP, Kerberos
Experience with the Atlassian Tool Suite (JIRA, Confluence)
Familiar with Agile, Scrum, or Scaled Agile Framework (SAFe) methodologies

Location: Annapolis Junction, Maryland
Type: Contract
Job #3813

Title: Software Engineer 3 (Data Management)
Location: Annapolis Junction, MD
Compensation Range: $190 -$210K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Summary:
The Software Engineer shall be responsible for the design, development, test, and sustainment of an end-to-end Big Data processing platform that provides downstream systems with aggregated analytic results and allows end-users the ability to query, visualize, and analyze event data from multiple data sources.

Required Skills:

Experience using the Linux CLI
Experience with Bash/Python scripting
Experience developing Java applications in a Linux environment
Experience developing with the Spring framework including Spring Boot
Experience with processing Big Data
Demonstrated experience with system design and architecture
Experience with Web development, HTTP, and REST services
Experience with NoSQL technologies such as Elasticsearch and Accumulo
Experience with CI/CD principles, concepts, best practices and tools such as Jenkins and GitLab CI

Desired Skills:

Experience with the Atlassian Tool suite (Jira, Confluence)
Experience with Git Version Control System
Experience with Test-driven development
Experience with containerization technologies such as Docker

Location: Sunnyvale, California
Type: Contract
Job #3812

Title: Network and Systems Engineer
Location: Sunnyvale, CA
Security Clearance: Secret Required
Salary: $120k – $150k
Work Schedule: Onsite | 9/80 work schedule | Department-wide team Fridays with social events
Contract Duration: 6+ months, with potential extensions tied to R&D contract awards

Position Overview:
We are seeking a Network and Systems Engineer to design, implement, secure, and maintain critical network infrastructure. The ideal candidate will have a strong foundation in networking and systems engineering, with the ability to troubleshoot complex issues, collaborate across teams, and deliver innovative solutions to meet mission needs.

Responsibilities:

Design & Implementation: Plan, design, implement, and maintain computer networks, including local area networks (LANs), wide area networks (WANs), and Internet connectivity.
Network Devices: Configure and manage routers, switches, firewalls, and other core network devices.
Network Security: Implement and monitor firewalls, intrusion detection/prevention systems, and other security controls to protect against unauthorized access and malicious activity.
Troubleshooting & Maintenance: Diagnose and resolve network issues, perform preventive maintenance, and ensure network performance, reliability, and efficiency.
Collaboration & Communication: Partner with IT, systems, and cybersecurity teams to ensure network infrastructure aligns with organizational needs. Communicate complex technical information to non-technical stakeholders clearly and effectively.
Continuous Improvement: Stay current with emerging network technologies, standards, and best practices; recommend and apply improvements to infrastructure and services.

Required Qualifications

Education & Experience:
- Master’s degree with 3+ years of relevant experience, or
- Bachelor’s degree with 5+ years of relevant experience, or
- Equivalent combination of education and experience.
Strong background in LAN/WAN design, routing, and switching.
Hands-on experience configuring and managing firewalls and intrusion detection systems.
Proficiency with troubleshooting network connectivity, performance, and security issues.
Knowledge of current network security standards and best practices.
Excellent collaboration and communication skills.

Preferred Qualifications:

Ability to apply principles, theories, and concepts to solve complex technical problems with innovative solutions.
Demonstrated ability to work under general direction and deliver results that meet objectives.
Experience working with internal and external customers, providing technical solutions to challenging issues.

Location: Sunnyvale , California
Type: Contract
Job #3811

Title: Systems Engineer
Location: Sunnyvale, CA
Security Clearance: Secret Required to start (Will eventually have to get Top Secret)
Salary: $100k – $130k
Work Schedule: Onsite | 9/80 work schedule | Department-wide team Fridays with social events
Contract Duration: 6+ months, with potential extensions tied to R&D contract awards

Position Overview:
We are seeking Systems Engineers at varying experience levels (Junior level through experienced) to support mission-critical systems in a dynamic environment. This role blends systems administration, configuration management, cybersecurity, and engineering support across sustainment and development environments. Candidates will work closely with cross-functional teams to ensure system reliability, compliance, and performance.
Junior-level candidates may receive close supervision while learning and applying technical principles, theories, and concepts. More experienced candidates will operate with greater independence, developing solutions to moderately complex problems and collaborating across engineering disciplines.

Responsibilities:

Provide systems administration and help desk support for multiple environments, including Windows, Solaris, Red Hat Enterprise Linux, and other operating systems.
Perform configuration management, data management, and software builds using CM tools.
Develop, implement, and monitor cybersecurity solutions to ensure compliance with security policies and RMF requirements.
Install, update, and patch software; troubleshoot and resolve system issues.
Develop and maintain technical documentation (e.g., Version Description Documents, job aides).
Participate in Agile activities, digital transformation initiatives, and CDRL preparations.
Generate, track, and document program and system performance metrics.
Provide program-wide information system support, including troubleshooting and remediation.
Travel to remote sites as required.

Additional Duties

Conduct safe and media audits; manage, control, label, and ship classified/unclassified media.
Perform Restricted Data (RD) scans; baseline new and existing documents in SharePoint.
Utilize project management tools (e.g., Jira) to manage workflows.
Develop and apply automation scripts to streamline processes.
Monitor system usage, network performance, and virtual environments.
Ensure compliance with configuration management processes; apply OS updates, antivirus solutions, and WSUS patching.
Troubleshoot VMS and Solaris issues; execute and monitor system backups.
Conduct COTS software assessments; maintain SCAP/STIGS compliance tools.

Qualifications:

Education & Experience:
Bachelor’s degree in engineering, computer science, or related field with 2+ years of experience, or
Advanced degree with 2+ years of experience, or
Equivalent combination of education, training, and relevant experience.
Non-exempt personnel may qualify with appropriate education and/or specialized training plus 2–7+ years of experience.

Technical Skills: Familiarity with systems administration, cybersecurity principles, and CM tools.

Soft Skills: Strong problem-solving ability, adaptability, and willingness to learn.

Clearance: Active Secret clearance required; must be able to obtain Top Secret.

Certifications: Security+ required (or ability to obtain within a set timeframe).

Location: Annapolis Junction
Type: Contract
Job #3809

Title: Software Engineer 3 (Monitoring Capabilities)
Location: Annapolis Junction, MD
Compensation Range: $190 -$210K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Summary:
The Software Engineer shall be responsible for developing rapid experimental prototypes of particular capabilities associated with the improvement and modernization of metrics and monitoring capabilities within the Y33 organization. Tasking shall also include demonstrations to validate concepts and to prove operational capability and scalability.

Required Skills:

Experience using the Linux CLI
Experience developing scripts using Bash/Python
Experience developing with Java in a Linux environment
Experience with software frameworks used for searching, monitoring, and analyzing big data such as Splunk, and Elastic Stack
Experience with monitoring and alerting tools including Prometheus
Experience with data visualization and analytics tools including Grafana
Experience developing with messaging frameworks including Kafka
Experience with noSQL technologies such as Elasticsearch and MongoDB
Experience with Key/Value and Time-series databases such as OpenTSDB
Experience with IaC (Infrastructure as Code) principles and automation tools including Ansible
Experience with CI/CD concepts, principles, methodologies, and tools such as GitLab CI
Experience with Git Version Control System

Desired Skills:

Experience with the Atlassian Tool Suite (JIRA, Confluence)
Experience with containerization technologies such as Docker

Type: Contract
Job #3801

Systems Administrator
Aurora, CO
Active TS/SCI w/ Poly
Compensation Range: $90,000 – $110,000

Job Responsibilities:
• Monitor and maintain computer configurations and performance in a VMware virtual environment
• Perform Operating System, and hardware troubleshooting in bare-metal and virtual environments
• Work with engineering and operations teams to troubleshoot and support systems in a 24×7 operating environment
• Provide IT support to new system developments and system upgrades
• Perform system backups and maintain system reconstitution capabilities and procedures
• Develop and implement scripts to monitor, improve and/or automate system performance and maintainability
• Maintain system documentation, configuration documents, user guides and troubleshooting procedures.
• Systems are operational 24×7 and occasionally require work effort beyond standard work hours.
• Full time 100% Onsite position.

Basic Qualifications:
• Typically requires bachelor’s degree, if no degree must have 6 years of experience.
• Minimum of 2 years of prior relevant experience.
• Must have a Current TS/SCI CI Poly transferable U.S. government issued prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Must have Linux experience
• Experience with administering virtual systems
• Must have a current DODI 8570.01-M IAT Level II (or higher) certification

Preferred Qualifications:
• Experience with Networking
• Experience supporting engineers in software, simulations, and hardware development.

Type: Contract
Job #3800

Infrastructure Engineer
Richardson, TX
Active TS/SCI w/ Poly
Compensation Range: $95,000 – $115,000

Job Responsibilities:
• You will leverage company and industry with the best practices and capabilities to develop and communicate implementation, of infrastructure solutions
• You will maintain existing systems through Linux Based Tools and manage the COTS stack on the system to support program needs
• You will assist with integration of the selected platform provisioning tool such as VMWare
• You will ensure that the COTS stack and versioning and will work with the team to make updates as necessary
• You will travel to customer sites to assist with system updates and deliveries when necessary

Basic Qualifications:
• Typically requires BS/BA Degree in Science, Technology Engineering Math (STEM) in Computer Science, Computer Engineering, Information Technology or Physics and 3 years of related work experience
• Experience with Agile Development Methodologies (E.g. scrum, SAFe)
• Experience with VMware
• Experience with programming languages (E.g. Python, Java, Ruby, Bash, C++, C#, Go)
• Current TS/SCI CI Poly issued security clearance is required on day 1. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Preferred Qualifications:
• Experience with Linux LDAP for creating Linux based accounts and managing roles and permissions
• Experience with basic Linux Bash scripting for task automation and management of existing scripts
• Experience with modernization technologies such as Terraform/Ansible, Artifactory, xray, Jenkins, Bitbucket, Jira, Confluence, Sonarqube etc

Location: Annapolis Junction, Maryland
Type: Contract
Job #3796

Title: Software Engineer 2 (GHOSTGEM)
Location: Annapolis Junction, MD
Compensation Range: $170 -$190K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

SWE-2 Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus three (3) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. OR
Seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
Position Description
The Software Engineer shall be responsible for developing, sustaining, and troubleshooting GHOSTGEM's software suite of applications including JEDIPOWER/DINO and possibly future capabilities as mission needs arise. Software development activities include implementation, testing, and integration with other COTS and FOSS products, packages, and libraries. The Software Engineer must have a demonstrated understanding of the software development life cycle.

Position Required Skills

Experience using the Linux CLI
Experience developing scripts using Bash/Python
Recent experience developing Java in a Linux environment
Recent experience developing with the Spring Framework including Spring Boot, Spring Data and Spring Integration
Experience with SQL databases including PostgreSQL
Experience with NoSQL databases including MongoDB
Experience with containerization technologies such as Docker and containerd
Familiar with Messaging Frameworks such as RabbitMQ and Kafka
Familiar with CI/CD principles, methodologies, and tools such as Bamboo and GitLab CI
Familiar with IaC principles, methodologies, and tools such as Ansible
Experience using Git Source Control System

Position Desired Skills

Familiar with container orchestration technologies such as Kubernetes
Experience creating Helm Charts to deploy containerized services on Kubernetes
Experience with the Atlassian Tool Suite including Jira and Confluence

Type: Contract
Job #3793

Infrastructure Engineer
Aurora, CO
Active TS/SCI w/ Poly
Compensation Range: $95,000 – $115,000

Job Responsibilities:
• You will leverage company and industry best practices and capabilities to design, deploy, implement, modernize, and support scalable network solutions
• You will support Network designs & development related activities, optimizing for performance and scalability across multiple computing environments
• You will utilize your Linux skills at the command line to deploy updates and change products for Cisco based network systems to support program needs
• You will provide guidance on network resource allocation, utilization, and optimization
• You must be a strong troubleshooter with experience in network issue mitigation as well as prevention
Basic Quals:
• Typically requires BS/BA Degree in Science, Technology Engineering Math (STEM) in Computer Science, Computer Engineering, Information Technology or Physics and 3 years of related work experience
• Experience with Linux System Administration (E.g. RHEL 6.0+)
• Experience with VMWare and related virtualized systems
• Comp TIA Security + within 90 days after starting in the role
• Current TS/SCI with CI Poly security clearance is required day 1. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
Preferred Quals:
• Advanced Experience configuring, deploying, and supporting network systems (E.g. Cisco, Cisco Nexus, Cisco ASA, Brocade)
• Experience Troubleshooting Layer 2 and Layer 3
• Experience with Firewall Implementation and knowledge
• Scripting in Python (preferred); Bash, Shell
• Experience integrating with identity management, access management, and authorization solutions (PKI, LDAP).
• Experience with Agile Development Methodologies (E.g.: Scrum, SAFe).
• Experience with scanning tools
• Basic Experience Using Automation Frameworks

Location: Chantilly, Virginia
Type: Contract
Job #3791

Title: All Source Analyst/Technical Targeter

*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Location: Chantilly, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Company Overview:

All Source Analyst/Technical Targeter
Level: Senior
Location: Dulles Corridor
Tasks:

Conduct data research and analysis leveraging customer targeting tools to facilitate operations
Design and tailor products/deliverables based on needs and deadlines for both tactical and strategic requests
Mentor new targeters on projects/workflows/tools
Test new solutions to meet targeting needs
Design new tools data scientists build for targeters

Qualifications:
TS/SCI with poly Bachelors degree in technical relevant field or 4 years of additional relevant experience 6+ years working for the client in a targeting / data science role

Experience with trade craft, tools and operations
Experience with open-source research and applications

Experience ingesting large datasets Scripting using Excel, Python, or similar technologies Extracting data using SQL, Presto, S3, or similar technologies Experience with data visualization tools like Elasticsearch, Kibana, Tableau

Location: Annapolis Junction, Maryland
Type: Contract
Job #3787

Title: DevOps Software Engineer 3 (Hybrid)
Location: Annapolis Junction, MD
Compensation Range: $190 -$210K
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *

Position Description:
The DevOps Software Engineer shall be responsible for software integration efforts, development of framework solutions, and maintaining automated infrastructure solutions to ensure high availability and scalability of HPC systems in a Linux environment. In this role, the DevOps Software Engineer shall work closely with various stakeholders to streamline the deployment pipeline and optimize system performance.

Qualifications:
Master’s degree in computer science or related discipline from an accredited college or university, plus five (5) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.
OR
Bachelor’s degree in computer science or related discipline from an accredited college or university, plus seven (7) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity
OR
Nine (9) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity.

Position Required Skills

Experience with Linux CLI
Experience writing scripts using Shell/Bash/Python
Linux administration experience including software integration, service management, configuration management, and routine sustainment operations related to provisioning, storage, and networking.
Experience installing, configuring, and supporting COTS/GOTS/FOSS software, libraries, and packages in a Linux environment
Extensive software development experience with Java and Python
Experience with stream/batch Big Data processing and analytic frameworks
Experience with CI/CD principles, methodologies, and tools such as GitLab CI
Experience with IaC (Infrastructure as Code) principles and automation infrastructure provisioning and configuration using tools such as Ansible
Experience with containerization technologies such as Docker
Experience deploying containerized services under Kubernetes orchestration
Demonstrated experience using system monitoring tools such as Prometheus/Grafana
Experience with Git for source code management, branching strategies, and team collaboration

Position Desired Skills:

Experience with the Atlassian Tool Suite (JIRA, Confluence)