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Spacecraft Thermal Engineer; Early Career; Millennium Space Systems

Job in El Segundo, Los Angeles County, California, 90245, USA
Listing for: Boeing
Full Time position
Listed on 2026-09-22
Job specializations:
  • Engineering
    Aerospace / Aviation / Avionics, Systems Engineer, Mechanical Engineer, Electrical Engineering
Salary/Wage Range or Industry Benchmark: 63000 - 134000 USD Yearly USD 63000.00 134000.00 YEAR
Job Description & How to Apply Below
Position: Spacecraft Thermal Engineer (Early Career) - Millennium Space Systems

Job Description

At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

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 direct impact to global security, like missile warning and Earth observation.

Our team is curious, bold and innovative. We take risks, innovate and explore new techniques and technologies. We influence change because we challenge the status quo. And when we watch our satellites launch, we know each one of us made it happen.

Job Description

At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

Job Summary

Thermal Engineers support the Spacecraft Development Program Managers and Chief Systems Engineer through the development of all spacecraft thermal system configurations, designs, analyses, testing, and flight operations. Spacecraft thermal subsystem elements includes all passive and active means of controlling the satellite’s system, subsystem, and component environments within both operating and survival limits during all pertinent system lifetime activities.

Position 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
  • Support thermal verification testing on spacecraft systems and components including test design, test conduct, data reduction, analysis, and reporting
  • Assist in proposal and business development efforts

This position's internal job is Mech Sys Design & Anlys Engr. Our team is currently hiring for a Level 1-2.

Basic Qualifications (Required Skills/Experience)
  • Bachelor of Science degree in Engineering (with a focus on Mechanical, Civil, Aerospace Aeronautical or Material Sciences)
  • 1 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
  • 1 or more years of experience with thermal analysis tools (e.g. Thermal Desktop, SINDA/FLUINT, Thermica)
  • This position requires the ability to obtain a US Security Clearance for which the US Government requires US Citizenship. A final U.S. clearance Post Start is required
Conflict of Interest

Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process.

Drug Free Workplace

Millennium Space Systems, a Boeing Company, is a Drug Free Workplace (DFW) where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.

Total Rewards

At Millennium Space Systems, a Boeing Company, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities.

Millennium Space Systems also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts,…

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