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Senior Systems Administrator - COMSEC Specialist

Modern Technology Solutions, Inc.
401(k)
United States, D.C., Washington
1300 Pennsylvania Avenue (Show on map)
Jan 06, 2026
MTSI is seeking a Senior Systems Administrator - COMSEC Specialist whose primary function will be to lead/support development, testing and integration of advanced communication systems.This position will be located in the Washington DC area.
Your essential job functions will include but may not be limited to:
  • Lead/monitor the design and implement a network architecture to support mission critical needs for the development of advanced systems.
  • Monitor and guide the development of requirements, conduct independent reviews and make recommendations.
  • This role will include COMSEC custodian responsibilities to lead and manage a large crypto shop and network.
  • Coordinate infrastructure requirements (logical addressing/routing/firewall modifications) for secure communications.
  • Evaluate the threats and vulnerabilities to information systems to ensure security controls effectively mitigate the risk of exploits.
  • Provide a comprehensive network design, setup and support of all server/client systems and applications for a Windows environment.
Required Qualifications:
  • 10+ years' of related technical experience.
  • Experience in satellite communications and/or aircraft communications subsystems development, integration and testing.
  • Experience as a team leader or manager of communication subsystems during development and/or production with responsibility for test, technical documentation and system evaluation.
Minimum Educational Requirements:
  • Bachelors Degree in a related field.
Clearance Requirements:
  • Top Secret, SCI Eligible; SAP experience within last 5 years or SCI in lieu of.
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  • Interesting Work:



    Our co-workers support some of the most important and critical programs to our national defense and security.






  • Values:



    Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.






  • 100% Employee Owned:



    We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.






  • Great Benefits - Most Full-Time Staff Are Eligible for:





    • Starting PTO accrual of 20 days PTO/year + 10 holidays/year


    • Flexible schedules


    • 6% 401k match with immediate vesting up to $9k annually


    • Semi-annual bonus eligibility (July and December)


    • Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account


    • Up to $10,000 in annual educational reimbursement


    • Other company funded benefits, like life and disability insurance


    • Optional zero deductible Blue Cross/Blue Shield health insurance plan







  • Track Record of Success:



    We have grown every year since our founding in 1993.




Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit www.mtsi-va.com

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.


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