Space Systems Integration Engineer

Overview: MTSI is seeking a highly experienced Space Systems Integration Engineer to provide advanced technical leadership across space vehicle development, integration, launch preparation, and on‑orbit operations in support of Space Systems Command (SSC). You will support all phases of mission development—design, integration, launch readiness, and operations—while ensuring compliance with required SSC guidance, policies, and mission standards. Key Responsibilities: Satellite Development, Integration, and Test Assess space‑vehicle design, development activities, and integration readiness. Review test plans, procedures, specifications, and technical orders to identify interface or integration issues. Observe assembly, integration, and test (AIT) activities for both primary spacecraft and Auxiliary Payloads (APLs). Support requirements tracking, verification, and reporting of technical and schedule risks. Payload, Spacecraft & Launch Vehicle Integration Lead coordination and oversight of spacecraft, payload, and launch vehicle integration—including multi‑payload and multi‑orbit missions, rideshare adapters, boosters, and CubeSat deployers. Review integration plans/procedures and observe integration execution. Support deviation/waiver processing, milestone development, and risk‑management activities. Required Qualifications: Bachelor’s degree in engineering or related STEM field (or four additional years of experience in lieu of degree). 9+ years experience in systems engineering, space‑vehicle development, integration, and test. Experience with interface management, ICD development, and end‑to‑end system integration. Experience with launch vehicle mission interfaces, satellite test/processing, and launch readiness activities. Experience supporting U.S. Government SPOs and multi‑contractor environments. Clearance: Active Top Secret Clearance and ability to acquire SCI / SAP Access Preferred Qualifications: Experience with multi‑payload missions, rideshare operations, or multi‑orbit deployment strategies. Familiarity with EELV/NSSL launch vehicles and launch‑site processing flows. Experience developing program plans, schedules, earned value metrics, and integration risk assessments. Strong ability to negotiate technical interfaces and coordinate responsibilities across distributed mission partners. The pay range for this position in California is $165,000/year to $205,000/year; however, base pay offered may vary depending on established government contract wages, 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-BH1 #mtsi #mtsijobs TS/SCI 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. 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 visit www.mtsi-va.com