• Location: Herndon, Virginia
  • Type: Contract
  • Job #2839

Title: Systems Administrator

Location: Herndon, 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.

Job Duties:

  • Proactively manage and support existing infrastructure, along with various network, applications and solution systems and structures.
  • Establish systems by planning, executing, installing, configuring and testing of PC, servers, hardware, software, LAN, WAN networks, and operating and system management systems, defining system and operational policies and procedures.
  • Maintain system performance by performing system monitoring and analysis, performing tuning and running security scans.
  • Assist with planned and unplanned customer software deployments and AEON Knowledge Base updates, utilizing a matrix team of staff across Client providing expertise in web-based application and installation, AEON functionality and AEON Account Management.
  • Document and maintain customer test and production environments and processes to ensure that Client's installs conform to customer processes and that Client and customer are aligned as to the state, timing and success of each process step.
  • Act as Tier-3 support participant to resolve any help desk tickets, calls and/or change requests where installation/application configuration may be an issue.
  • Participate in infrastructure architecture, testing strategy, create and execute PowerShell scripts and maintain all production and development systems.

  Required Skills:

  • Must have an Active TS/SCI with polygraph ONLY, all others need not apply.
  • Systems Administrator or related work experience in a technical IT operation.
  • Experience with VMWare and Microsoft Technology Stack.
  • Experience and understanding of Microsoft infrastructure architecture components for .NET applications in sufficient detail to understand version terminologies and verifications.
  • Experience with Microsoft Server administration, e.g., Windows Servers, Active Directory, TFS, SharePoint, SQL, etc.
  • Experience with security configurations, SSL, TLS as well as appropriate compliancy.
  • Experience with LAN, WAN configurations and setup including Group Policies and Windows Security.
  • Experience with creation and execution of PowerShell scripts.
  • Experience with software development and maintenance practices and methodologies.
  • Familiarity and experience with Office 365, Cloud infrastructure and support.
  • Excellent verbal, presentation, and written communication skills.
  • Ability to interact professionally with a diverse group of executives, managers, and subject matter experts.
  • Self-starter, adaptable, and process-oriented providing various levels of support to a project.
  • Great teamwork, organizational, and time-management skills.

Desired Skills:

  • Experience in gathering requirements, design, and testing phase of software is a plus.
  • Familiarity with FedRAMP, FISMA, NIST, and/or CISSP.
  • Familiarity with ITIL Foundation Version 3.
  • Experience with Agile and Scrum processes.
  • Experience with Federal acquisition and procurement processes.


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