Apex Space
Thermal Engineer (Mid)
$125K–$155K
Los Angeles · Full-time · Posted Apr 30, 2026
- Experience
- 3+ years in spacecraft thermal modeling; 1+ year in thermal cycling and thermal vacuum testing.
- Visa sponsorship
- Applicants must qualify as a U.S. Person or be able to obtain the required U.S. export authorizations.
About the job
Designs, analyzes, tests, and integrates spacecraft thermal systems and hardware to support mission success and reduce subsystem cost and complexity.
What you'll do
- Develop and correlate spacecraft thermal models; assess analysis validity and compliance with applicable standards and vendor requirements.
- Design and optimize thermal control systems and hardware, and plan and manage thermal vacuum and thermal cycling tests.
- Support subsystem reviews and oversee thermal flight-hardware integration and quality control.
What they ask for
- 3+ years of radiative and conductive spacecraft thermal modeling using Thermal Desktop or similar software.
- Strong understanding of thermal margins and aerospace thermal control standards.
- Experience selecting, sizing, and designing thermal control hardware, including heat pipes, heaters, OSR, SSM, MLI, TEC, thermal paints, and tapes.
- 1+ year of experience with thermal cycling and thermal vacuum testing, including setup, instrumentation, and model correlation.
Nice to have
- Experience with full-vehicle thermal vacuum testing and thermal model correlation.
- Familiarity with 2-phase spacecraft thermal control systems.
Pay
$125K – $155K (base salary)
Tools
Ansys Thermal Desktop, Siemens NX, Teamcenter, Python, C/C++, Matlab, Atlassian
Model-written summary · the original posting is authoritative