Spacecraft Thermal Engineer (Mid to Senior Career)
Job description
About the Position
Bring your ideas to life at Boeing's Millennium Space Systems as a Spacecraft Thermal Engineer (Mid to Senior Career) in El Segundo, California or Los Angeles, California. Join our fast, agile small satellite company focused on national security space, where our missions have a direct impact on global security, such as missile warning and Earth observation.
Responsibilities
- Perform spacecraft thermal design and analyses at the board, component, subsystem, and system level.
- Develop systems and spacecraft element thermal models to predict thermal loads, impacts, and temperature margins to support system design.
- Brief design and analysis materials to program managers, customers, and/or sponsors.
- Identify all materials, processes, and facilities to achieve a qualified spacecraft thermal design and operation.
- Assist in proposal and new business development efforts.
- Support thermal verification testing on spacecraft systems and components including test design, test conduct, data reduction, analysis, and reporting.
- Support the development of tools to aid in conceptual designs and post-processing analysis.
- Potential to cross-train with MLI team for hands-on support.
Requirements
- Bachelor of Science degree in Engineering (with a focus on Mechanical, Civil, Aerospace Aeronautical or Material Sciences).
- 2 or more years of experience in the design, development, analysis, implementation, testing, and/or operation of spacecraft thermal systems or other related complex thermal systems.
- Proficiency with thermal analysis tools (e.g., Thermal Desktop, SINDA/FLUINT, ANSYS, Thermica).
- Ability to obtain and maintain a TS/SCI Security Clearance.
Nice to Have
- Active TS/SCI Clearance.
We Offer
- Competitive salary range: $102,000 - $182,500 (based on experience and qualifications).
- Comprehensive benefits package including health insurance, retirement savings plans, life and disability insurance programs, and more.
- Opportunities for professional growth and development.
- Drug-free workplace with post-offer testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met.
About the Company
Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have a direct impact on global security, such as missile warning and Earth observation. Our team is curious, bold, and innovative, taking risks, exploring new techniques and technologies, and challenging the status quo.
Application Details
- Job ID: JR2026518786
- Category: Engineering
- Role Type: Onsite
- Post Date: Sep. 10, 2026
- Application Deadline: Sept. 30, 2026
Equal Opportunity Employer
Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status, or other characteristics protected by law.
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