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Spacecraft Subsystem SME

Modern Technology Solutions, Inc. (MTSI)
El Segundo, CA Full Time
POSTED ON 5/8/2026
AVAILABLE BEFORE 7/14/2026
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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Salary : $150,000 - $229,000

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