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Senior Systems Engineer

Modern Technology Solutions, Inc.
401(k)
United States, Virginia, Chantilly
Sep 19, 2025
Modern Technology Solutions, Inc. (MTSI) is seeking a Senior Systems Engineer to support the Office of the Secretary of Defense (OSD) Strategic Capabilities Office (SCO). In this role, the candidate will conduct and oversee feasibility studies, military utility analyses, and engineering activities for current and emerging SCO projects. This position will focus primarily on designing, developing, and testing innovative hypersonic weapon concepts while ensuring alignment with military service needs and mission objectives.
Responsibilities:
  • Prepare statements of work (SOWs) and other acquisition-related documentation for tasks performed by technical performers.
  • Manage the complete lifecycle of acquisition and contracting efforts, including activities ranging from Request for Proposal (RFP) development to contract closeout.
  • Assist in developing program budgets and perform cost estimation for specific project activities.
  • Perform administrative duties such as maintaining action item trackers, submitting funding request documents, managing team calendars, scheduling meetings, coordinating senior leader engagements, and preparing briefing materials.
  • Lead efforts in concept of operations (CONOPs) development and requirements engineering for prototype systems.
  • Maintain risk trackers and burndown charts to monitor program progress and mitigate risks effectively.
  • Assist with the planning, coordination, and execution of test and evaluation (T&E) events.
  • Support the planning, execution, and oversight of modeling and simulation efforts to refine and validate operational concepts.
  • Apply knowledge of Department of Defense (DoD) acquisition processes, testing standards, and requirements to ensure program compliance and success.
Qualifications and Education Requirements:
  • Undergraduate degree in a STEM field, or equivalent technical work experience within organizations such as the Department of Defense (DoD), NASA, NOAA, or NNSA (civilian or uniformed).
  • A degree or experience specializing in Aerospace Engineering or Systems Engineering within an aerospace context is highly desired.
  • Prior experience working in a program office for DoD, NASA, NOAA, or NNSA is preferred.
  • Must be eligible for TS/SCI clearance.
  • Minimum of 3 years of professional experience in a related technical or engineering field.
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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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