Amazon Leo is Amazon's low Earth orbit satellite network. Our mission is to deliver fast, reliable internet connectivity to customers beyond the reach of existing networks. From individual households to schools, hospitals, businesses, and government agencies, Amazon Leo will serve people and organizations operating in locations without reliable connectivity. Export Control Requirement: Due to applicable export control laws and regulations, candidates must be a U.S. citizen or national, U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum. We are looking for a Sr. Thermal Design Engineer who combines strong technical, research and analytical capabilities with a demonstrated ability to get the right work done quickly and effectively. The successful candidate must have experience working on active thermal control of space vehicles, producing top notch thermal analysis and providing essential thermal related input and recommendations to system architects and subsystem leads. Key job responsibilities - Support extensive architectural trades with preliminary thermal analysis on spacecraft and subsystems for orbital operational conditions and vehicle control options. - Perform detailed and comprehensive analyses of active thermal control systems, including all required hardware and corresponding tradeoffs. - Drive design optimization for performance, mass and cost, while meeting system reliability requirements through application of a range of thermal control hardware options. - Define, lead and execute thermal cycling and thermal vacuum tests for development and qualification testing at subsystem and vehicle levels. - Support the procurement department in sourcing strategy for all required components. - Define and select test equipment as needed (e.g., TVAC and thermal chambers, sensors, data logging equipment). - Conduct testing of prototypes and engineering models for fast design feedback loops. - Develop and execute reliability plan for demonstration of lifetime of active components. - Document trades and design evolution, and present results during design reviews.