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Spacecraft Subsystem Subject Matter Expert

Modern Technology Solutions Inc

On-site
El Segundo, CA
Full-time
Staff
Principal
10+ yrs
$150k–$220kPosted 59m ago

Real job — pulled straight from Modern Technology Solutions Inc’s careers page · Verified October 27, 2026 · No reposts.

Job description

Modern Technology Solutions Inc is hiring a Spacecraft Subsystem Subject Matter Expert — a full-time, based in El Segundo, CA role ($150k–$220k). Apply directly on Modern Technology Solutions Inc's careers page below.

Spacecraft Subsystem SME

Location: El Segundo, CA, USA

Work Location: onsite

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 $220,000/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.

#LI-MM1
#MTSI
#MTSIJOBS

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Frequently asked questions

What is the salary for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc?

The estimated salary range for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc is $150,000 - $220,000 USD per year.

What skills are required for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc?

The required skills for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc include: Mechanical Engineering, Electrical Engineering, Communication.

What is the seniority level for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc?

Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc is a Staff / Principal level position.

How do I apply for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc?

You can view the full description and apply for Spacecraft Subsystem Subject Matter Expert at Modern Technology Solutions Inc on EchoJobs: https://echojobs.io/job/modern-technology-solutions-inc-spacecraft-subsystem-sme-0v2ff.