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• 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

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 *