Sotera Defense Solutions

Senior Systems Administrator

3 months ago
Information Technology
TS/SCI with Polygraph


Be part of an exciting team dedicated to keeping America safe at home and abroad.  Sotera Defense Solutions is seeking candidates with experience as a Senior Systems Administrator in Reston, Va. Candidate would support a large, U.S. Government project providing a wide range of IT services across a global IT enterprise.  Services include IT infrastructure O&M, plus engineering support to design, develop, test and deploy IT capabilities into the enterprise. 


Qualified candidates must possess an active TS/SCI with polygraph.


Sotera Defense Solutions, a KeyW company, is looking for an experienced Systems Administrator to provide Linux engineering, software integration and tier three administration in the contest of an automated cloud provisioning environment. 


Primary duties include the following:

  • Perform systems administration, maintenance, and engineering in multiple large enterprise server environments (Linux, Red Hat, CentOS).
  • Provide technical guidance in software engineering techniques and automated support tools.
  • Analyze functional business applications and design specifications for functional activities.
  • Prepare required documentation, including both program-level and user level documentation.
  • Assist in establishing standards for information systems procedure.
  • Complete day to day Operations and Maintenance tasks.
  • Perform operating system software upgrades and patches.
  • Perform technical evaluations, analysis and troubleshooting for all supported servers in response to help desk tickets including, server failures, full systems outages and troubleshooting.
  • Assist in server maintenance and special projects, during extended work hours.
  • Attend TEMs to discuss and agree upon MOAs, ensuring MOA is within scope of supporting teams’ work.
  • Support customer in the development and maintenance of systems baseline.
  • Assess server loads and work with Technical Leads on developing tuning recommendations




  • Bachelor's degree and 8 years of experience or Master's degree and 6 years of experience in a related field of study.
  • High level of proficiency in Linux and Centrify
  • Active TS/SCI Polygraph clearance is required.

About The Organization

Sotera Defense Solutions, Inc. (Sotera) is an agile, mid-size national security technology company that delivers innovative systems, solutions and services in support of the critical missions of the Intelligence Community, Department of Defense, Department of Homeland Security and federal law enforcement agencies charged with ensuring the safety and security of our nation. Our 1,200 employees are focused on delivering essential counterterrorism, cyber operations, intelligence, data analytics, C4ISR and force mobility solutions to our customers throughout the national security community.


Sotera Defense Solutions is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age, or any other characteristic protected by law.


If you require a reasonable accommodation to apply for a position with Sotera through its online applicant system, please contact Sotera’s recruiting team at  


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