> Markdown version of [/jobs/ext/3628082-senior-principal-spacecraft-thermal-engineer-remote](https://www.wearedevelopers.com/jobs/ext/3628082-senior-principal-spacecraft-thermal-engineer-remote). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior/Principal Spacecraft Thermal Engineer (Remote) - **Company:** Juniper Partners, Llc - **Location:** East Petersburg, PA, United States (Remote available) - **Experience:** Expert - **Salary:** $150,000.0 - $175,000.0 - **Contract:** Permanent contract - **Skills:** Computer-Aided Design, Computational Fluid Dynamics, Subsystems, Juniper - **Published:** October 8, 2026 - **Apply:** https://www.disabledperson.com/jobs/75907491-senior-principal-spacecraft-thermal-engineer-remote ## About the Role * B.S. or M.S. in Mechanical or Aerospace Engineering. * 7+ years of engineering experience. * Strong heat transfer and thermal analysis fundamentals. * Experience with spacecraft thermal design and troubleshooting. * Proficiency with CAD, FEA, and CFD tools; Thermal Desktop strongly preferred. * Spacecraft mission and subsystem experience preferred. * Strong communication, problem-solving, and teamwork skills. ## Description We are seeking an experienced Spacecraft Thermal Engineer to support thermal and mechanical design for spacecraft and spaceflight hardware. This role partners with engineering and manufacturing teams from early trade studies through detailed analysis, prototyping, and flight hardware., * Perform spacecraft thermal and mechanical analysis and design. * Develop thermal models and evaluate thermal control systems, radiators, and heat rejection strategies. * Analyze component temperatures across mission and orbital environments. * Support prototype and flight hardware development. * Collaborate with multidisciplinary engineering and manufacturing teams. * Review technical documentation and provide design recommendations. * Mentor junior engineers and support complex space programs.