At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We're working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our diverse team of problem solvers as we add new chapters to the history of spaceflight! The role is part of the In-Space Systems business unit, which is focused on development, manufacturing, and operation of satellite systems to address one of the most compelling challenges in spaceflight today: space mobility. As part of a hardworking team of diverse engineers, you will contribute to defining and developing spacecraft thermal control systems. The Thermal Spacecraft Engineer is an individual contributor within Blue Origin's In-Space Systems Business Unit - Blue Ring Platform. This individual will thrive working in a fast-paced and often uncertain environment, contributing to innovative solutions while demonstrating personal leadership, technical competence, and attention to detail. Special Mentions * Relocation provided * Travel expected up to 25% of the time Responsibilities include but are not limited to: Drives the development of thermal systems, including system architecture definition, thermal system modeling, component sizing, and design. Perform trade studies relating to the selection of material and subsystem hardware. Perform hand calculations to screen concepts without detailed modeling and to sanity check finite element model results. Develop vehicle-level thermal models using SINDA/FLUINT with Thermal Desktop. Develop and maintain system analysis documentation. Perform steady state & transient thermal analysis of spacecraft thermal systems and tracking system performance in ground ops, TVAC testing, launch, Earth orbit, and beyond Earth orbit environments. Provide thermal engineering leadership and support for developing thermal vacuum (TVAC) test procedures, scripts, and installation designs. Provide thermal engineering leadership and support for thermal hardware procurement, planning, procedural & operations support of Spacecraft assembly, integration & test (AI&T) efforts. Minimum Qualifications Minimum of a B.S. degree in mechanical or aerospace engineering. Solid understanding of thermal fundamentals. 6+ years of experience designing, analyzing, and testing spacecraft thermal systems. Proficient in Thermal analysis, specifically in Thermal Desktop and Sinda/Fluint, including model validation and test correlation. Ability to earn trust, maintain positive and professional relationships, and contribute to a culture of inclusion. Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum. Preferred Qualifications M.S. degree in mechanical or aerospace engineering Experience solving various thermal-fluid problems, demonstrating breadth in analysis application. Proficiency in one or more programming languages (e.g., Python, C/C++). Depth of experience in one or more of the following areas: Thermal Vacuum test planning and execution. Spacecraft/payload thermal analysis. Active or Passive Thermal Control System. Spacecraft Thermal hardware design, installation & testing. Thermal hardware such as radiators, Multi-Layer Insulation (MLI), heaters, thermostats, pumps, valves, sensors, thermostats, heat pipes, ablative materials, sublimators, and/or phase change materials. Spacecraft Thermal system on-orbit operations support. Compensation range for on site CO applicants is $102,383-$143,335 Compensation range for on site WA applicants is $111,690-$156,366 Compensation range for on site CA applicants is $111,690-$156,366 Other site ranges may differ Inclusivity Statement Don't meet all desi