Relativity Space · 16 hours ago
Senior Thermal Analysis Engineer
Long Beach, California
Full-time
Onsite
Senior Level
$142K/yr - $182K/yr
5+ years expRelativity Space is building rockets to meet the growing demand for launch capacity and advance scientific exploration. The Thermal Analysis Engineer will develop and apply spacecraft thermal models, define thermal architectures, and ensure spacecraft payloads remain within operating limits throughout mission phases.
3D TechnologyAerospaceArtificial Intelligence (AI)Manufacturing
Responsibilities
Develop, maintain, and mature integrated spacecraft thermal models at the vehicle, subsystem, and component levels
Define thermal architectures and requirements and iterate hardware designs in collaboration with cross-disciplinary engineering teams
Generate flight temperature predictions, margins, and off-nominal analyses, and communicate actionable guidance to the broader engineering team
Ensure spacecraft payloads remains within operating and survival limits across all mission phases using robust passive and active thermal control strategies
Correlate thermal models to component, subsystem, and vehicle-level test and/or flight data
Qualification
Required
Bachelor's or Master's degree in Aerospace Engineering, Mechanical Engineering, or a closely related field
5+ years of experience developing and applying thermal models for spacecraft or flight hardware
Proficiency with spacecraft thermal analysis tools such as Thermal Desktop, ANSYS, or other software
Experience anchoring thermal models to test and/or flight data and using results to drive design decisions
Strong understanding of lumped-parameter (0D/1D) thermal networks and appropriate use of higher-fidelity methods
Effective technical communicator with demonstrated success working cross-functionally in fast-paced environments
Preferred
Familiarity with spaceflight thermal margin, qualification, and verification standards (e.g. SMC-S-016)
Experience planning or executing spacecraft environmental testing, including TVAC
Experience across a full spacecraft lifecycle, from concept development through on-orbit operations
Prior experience supporting flight thermal predictions or mission operations
Benefits
Competitive salary and equity
Generous PTO and sick leave policy
Parental leave
Annual learning and development stipend
Company
Relativity Space
Relativity Space is an aerospace company that designs, develops, and builds 3D printed rockets.
1001-5000 employees
Funding
Current Stage
Late StageTotal Funding
$1.36BKey Investors
FidelityTiger Global ManagementPlayground Global
2023-11-15Series F· $20M
2022-02-03Secondary Market
2021-06-08Series E· $650M
Leadership Team
Eric Schmidt
Chair and CEO
David Giger
VP of Engineering
Recent News
Research & Development World
2025-12-24
2025-11-14
2025-11-12
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