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Spacecraft Subsystem Sme
Posted on Jan. 16, 2026
- El Segundo, United States of America
- 150000.0 - 229000.0 USD (yearly)
- Full Time
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Modern Technology Solutions, Inc. (MTSI) is seeking a motivated and experienced spacecraft or spacecraft subsystem SME to join our team in El Segundo, CA.
The MSEIT effort provides leading-edge Systems Engineering & Integration (SE&I) for the United States Space Force’s (USSF) Space Systems Command (SSC). We acquire state-of-the-art Military and Commercial Satellite Communications (SATCOM) systems, providing global secure, survivable, and protected communications for our nation’s warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.
Key Responsibilities:
- Provide the technical leadership and assessment for the ESS Program Office in the prime contractor delivery of the space vehicle in the area of Mechanical, Electrical or Test
- Lead the trades for unit and subsystem designs if necessary, integration and testing into the spacecraft bus, payload and space vehicle
- Ensure the technical design and interfaces within the space vehicle, along with the ground and terminal segments
- Support all component and unit test programs, including space qualification testing ensuring survivability in the space environments. Develop test documentations, e.g. test plan and reports as necessary
- Support the space vehicle test program, ensuring survivability in the space environments. Develop test documentations, e.g. test plan and reports as necessary
- Building and maintaining strong, collaborative relationships with various government customer organizations, contractors, and FFRDC teammates
Work Environment:
- Location: On-site
- Travel Requirements: Infrequent
- Working Hours: Standard
Qualifications:
Required:
- An active Secret Clearance is required for this position. Ability to obtain, or currently cleared for TS/SCI is a plus.
- BS in technical field, such as engineering, mathematics, physics, software or computer science
- 15 years’ experience with spacecraft bus or subsystems, or Master’s degree and 10 years’ experience
- Previous proven coordination experience
- Effective communication (both written and oral), and interpersonal skills.
- Ability to perform in highly visible and stressful situations
- DOD or IC space experience preferred
- Space systems engineering experience desired at the unit, subsystem, spacecraft or space vehicle levels
- Requirement to work on site at LAAFB 100%. Remote work unavailable
- Approximately 10% travel within Southern California and CONUS, depending on prime contractor selection of unit suppliers
Compensation: The pay range for this position in California is $150,000/year to $229,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI also offers a full range of medical, financial, and other benefits, dependent on the position offered. Base pay information is based on market location. Applicants should apply via MTSI's internal or external careers site.
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Perks and Benefits
- Vacation:New Hires Accrue 20 days of PTO and 10 Holidays per Year
- Health Insurance:Zero Deductible Health Plans
- Flexible Schedules:Flex Schedules
- Professional Development:Up to $10,000 Annual Education/Training Reimbursement
- ESOP:Funded Stock Ownership Plan
- 401k Match+:6% 401k Match + Immediate Vesting
- Bonus Program:Semi-Annual Bonus Opportunity
- Mentorship:Career Mentorship Programs
Why is MTSI a great place to work
- 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 Decemeber)
- 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 visitwww.mtsi-va.com
EEO Statement
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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