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Boeing Company

Spacecraft Thermal Engineer (Early Career) - Millennium Space Systems

USA - El Segundo, CA Posted today $63,000 - $113,000

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Sponsorship verdict

Posting rules out sponsorship

The posting rules out sponsorship or requires citizenship or security clearance.

  • Employer is on a government sponsor recordThe US Department of Labor certified 72 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first.
  • The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
  • No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area.
  • What Boeing Company paid sponsored hires in similar roles3 certified filings for “Systems Engineer (Reliab, Maintain & Sys Health)” (Information Technology Project Managers) in CA: $145k–$145k, median $145k.
  • Security clearance mentionedFrom the posting’s own wording.
  • Confirmed live todayWhen a source last listed this job as open.
Details and sources
Employer is on a government sponsor record
The US Department of Labor certified 72 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. Source: LCA disclosure data (US Department of Labor (OFLC)).
No salary bar for this route
H-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
What Boeing Company paid sponsored hires in similar roles
3 certified filings for “Systems Engineer (Reliab, Maintain & Sys Health)” (Information Technology Project Managers) in CA: $145k–$145k, median $145k. Most were filed at wage level IV (100%) — 4 lottery entries, ≈61% projected selection odds for cap-subject employers. The pay stated here ($63,000 - $113,000) is below what this employer usually pays sponsored hires for this role. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).

US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).

A verdict summarises public evidence. It is not legal advice and never a guarantee: the employer and the immigration authority decide. Sign in to factor in where you can already work.

Before you apply

Requirement gap

The posting mentions a security clearance — usually restricted to citizens of that country.

These come from the posting’s own wording. Read the original listing to confirm. See better-fit alternatives →

About the role

Spacecraft Thermal Engineer (Early Career) - Millennium Space Systems Company: Millennium Space Systems 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   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, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.   The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements. Pay is ba

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