As an Astranis Senior Thermal Engineer, you will design, evaluate and test thermal solutions ranging from electronic chips to full spacecraft thermal vacuum tests. You must have a strong problem-solving background as well as hands-on testing skills. Experience with spacecraft or printed circuit board thermal mitigation are benefits but not required. Role • Identify feasible thermal architectures and mature designs through conceptual, preliminary, and detailed design phases using practical passive and active thermal control techniques. • Take charge of design trades that successfully balance performance margins, resource use, risk, cost, and schedule. • Perform thermal analysis to varying degrees of fidelity (simplified to detailed) on a variety of different types of hardware such as propulsion components, batteries, high powered electronics, RF components, mechanisms, and printed circuit boards (PCBs). • Design, evaluate, procure and test thermal solutions such as heaters, heat pipes, thermal interface materials, and surface coatings. • Develop processes and procedures for integration and assembly which ensure thermal design intent is met. Collaborate with the integration and test team in the installation of thermal hardware as needed. • Plan and run thermal vacuum testing and verification at the component and spacecraft level. • Mentor and support junior engineers. • Assist in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team. Requirements • Bachelor of Science degree in engineering or physics • 8+ years of experience in a thermal/mechanical role • Experience in thermal analysis and thermally-constrained design; computational thermal design experience (finite methods) is not required but highly preferred • Proficiency with mechanical CAD • A passion and enthusiasm for hardware development, including working in a fast-paced environment and hands-on design and development • Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria. Bonus • Experience with Thermal Desktop • Experience with ANSYS Mechanical or ANSYS IcePak • Experience with Electronics Packaging and Printed Circuit Board (PCB) design • Experience building and operating high vacuum systems • Experience designing for a vacuum environment or environments with large temperature swings What we offer: All our positions offer a compensation package that includes equity and robust benefits. Base pay is just one component of Astranis's total rewards package. Your compensation also includes a significant equity package via incentive stock options, high-quality company-subsidized healthcare, disability and life insurance, 401(k) retirement planning, flexible PTO, and free on-site catered meals. Astranis pay ranges are informed and defined through professional-grade salary surveys and compensation data sources. The actual base salary offered to a successful candidate will additionally be influenced by a variety of factors including experience, credentials & certifications, educational attainment, skill level requirements, and the level and scope of the position. Base Salary $145,000-$235,000 USD U.S. Citizenship, Lawful Permanent Residency, or Refugee/Asylee Status Required (To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States, or other protected individual as defined by 8 U.S.C. 1324b(a)(3))