Sr. Thermal Engineer, Thermal & Fluid Analysis (Starship)

At SpaceX, we believe in a future where humanity explores the cosmos, and we are dedicated to turning this vision into reality. As a Senior Thermal Engineer on the Starship Thermal & Fluid Analysis team, you will play a critical role in the thermal design, testing, and validation of spacecraft and related hardware. Your expertise will contribute to enhancing vehicle performance and reliability, driving forward our mission to create a fully reusable transportation system that supports crew and cargo missions to Earth orbit, the Moon, Mars, and beyond.

Critical Energy designs and builds modular power plants that turn heat into electricity using a closed-loop thermodynamic cycle. The company focuses on clean energy solutions for demanding sectors, including AI hyperscalers and data centers, and is backed by leading climate and technology investors. The Senior Systems Engineer - Thermal & Fluid Dynamics will take a lead role in developing power generation systems for geothermal and waste heat recovery applications. This position involves hands-on work from initial concept through delivery, with a strong emphasis on system-level modeling, thermal management, and fluid flow analysis. What you will do Design, develop, test, and optimize clean energy power generation systems Model and analyze thermal and fluid dynamics at the system level, focusing primarily on 1D flow Work with components such as heat exchangers, turbines, pumps, cooling and lubrication loops, and other balance-of-plant subsystems Integrate system architecture and physics-based modeling to support product development Collaborate closely with teams across Systems, Turbomachinery, Supply Chain, Manufacturing, and Field Operations What we look for Extensive experience in thermal and fluid dynamics engineering Ability to work across the full product lifecycle, from concept to delivery Comfort with hands-on development and cross-functional teamwork Flexibility, willingness to learn, and a strong drive to support company growth Location This role is based in Hawthorne, CA.

At SpaceX, we envision a thrilling future where humanity explores the cosmos. As a Thermal Engineer within our Starshield team, you will play a pivotal role in leveraging the innovative Starlink technology to bolster national security initiatives. Your expertise will be crucial in the thermal design, testing, and validation of our advanced vehicles and hardware. Join us in shaping the future by enhancing vehicle performance and ensuring the success of our missions.

At Reflect Orbital, we thrive on innovation and speed. If you're passionate about taking ownership and making a significant impact, we want to learn about your achievements across various domains.About the RoleAs a Thermal Engineer, you will be at the forefront of our spacecraft's thermal design, working meticulously at both the component and integrated levels. You will develop and refine our thermal management strategies through rigorous testing and iteration, ensuring we deliver reliable systems for space missions.ResponsibilitiesDesign and implement robust thermal systems for avionics and other electro-mechanical subsystems.Utilize our thermal modeling toolchain to deliver accurate results that inform critical design decisions at the component level.Develop testing systems that validate the performance of components and thermal control systems in space conditions.Assist in material selection for spacecraft components.Collaborate with system designers to enhance overall spacecraft thermal efficiency.Ideal QualificationsProven experience in heat transfer modeling using numerical methods with demonstrable accuracy.Experience in validating simulation outcomes through thermal vacuum and thermal cycling tests for space hardware.Background in designing comprehensive thermal management systems for spacecraft, from simulation to hardware implementation.Even if you don’t meet all the qualifications, we encourage you to apply. Our priority is to find exceptional individuals, and we value diverse backgrounds that contribute to our mission.

At SpaceX, we envision a future where humanity expands its horizons beyond Earth, exploring the cosmos. We are at the forefront of developing groundbreaking technologies aimed at making interplanetary life a reality, with our ultimate mission to establish human presence on Mars.Position: Propulsion Thermal Analyst (Raptor Combustion Devices)As a Propulsion Thermal Analyst, you will play a crucial role in ensuring the thermal resilience of Raptor components that endure extreme conditions from launch to landing. This position requires a deep understanding of physics, thermodynamics, and advanced computational methods to tackle the challenges presented by high-performance hardware. You will lead the analysis, design, testing, and development of components for the Raptor engine, which powers Starship, the largest launch vehicle ever constructed.

Join Reflect Orbital as a Thermal Engineering Intern, where you will play a crucial role in shaping innovative solutions in aerospace technology. We are looking for dynamic individuals eager to take ownership of their work and drive impactful change within our team.About the RoleAt Reflect Orbital, we value talent in all its forms, regardless of prior experience. This internship offers a unique chance to tackle complex challenges that advance the frontiers of human capability and technology.As an intern, you will be entrusted with responsibilities akin to our full-time engineers, contributing directly to our cutting-edge flying constellation projects.We seek candidates who thrive in ambiguous situations, are hands-on problem solvers, and can commit to a minimum of 12 weeks at our Hawthorne, CA office. We encourage all passionate individuals to apply, even if you do not meet every listed qualification.

Join SpaceX as a Thermal Hardware Supervisor and lead a team dedicated to the design, development, and testing of thermal hardware solutions for our advanced space systems. As a pivotal part of our engineering team, you will oversee projects that are critical to the success of our missions.

At SpaceX, we believe that a future where humanity explores the cosmos is infinitely more thrilling than one where we remain earthbound. We are on a mission to develop groundbreaking technologies that facilitate this vision, with our ultimate goal being the establishment of human life on Mars.SENIOR SOFTWARE ENGINEER - SECURITY (STARSHIP)Our Starship spacecraft and Super Heavy rocket, collectively known as Starship, represent the pinnacle of reusable transportation systems, engineered to transport crew and cargo to Earth orbit, the Moon, Mars, and beyond. Starship is poised to become the most powerful launch vehicle ever created, capable of carrying over 100 metric tons to Earth orbit.As a Senior Software Engineer on the Starship Software team, you will play a crucial role in defining and constructing the security infrastructure that safeguards Starship vehicles, launch pads, operator UIs, and communications links against unauthorized access, data tampering, denial-of-service attacks, and other threats. You will collaborate closely with the broader software engineering team to implement and uphold secure software development practices. We are seeking candidates with a proven track record of delivering reliable software and a comprehensive understanding of modern Internet security designs, including the cryptographic fundamentals involved. You can see the broader perspective, prioritize effectively, and are comfortable working across various levels of abstraction. Ideally, you possess exceptional skills in one or more of the following areas:Secure Software Development Life CycleApplied CryptographyNetwork SecurityOperating System SecuritySecure/Authenticated BootIncident Response and Adversary DetectionVulnerability ResearchSuccess in this role requires adaptability, clear communication, and the ability to foster productive relationships with other engineering teams. If you are passionate about building high-quality products, thrive on the challenges posed by adversaries, and aspire to make an impact on an interplanetary scale, you will thrive in our environment.

Join SpaceX's Starship electrical hardware development team and help drive the future of space exploration. As a Senior Electrical Engineer, you'll play a pivotal role in designing high-reliability electronics that enable revolutionary advancements in orbital flight and human space travel. Collaborate with a team of innovative engineers to create unparalleled electronics for rockets and spacecraft, pushing the boundaries of technology to make humanity multi-planetary.

At SpaceX, we envision a future where humanity explores the stars, and we are passionately working towards making that a reality. Our ultimate goal is to enable human life on Mars.SENIOR DSP ENGINEER (STARSHIP AVIONICS)Join us in revolutionizing orbital flight and space travel through Starship, which opens gateways for humanity to establish new frontiers in space and become a multi-planetary species. Our team designs and develops some of the most advanced electronics ever utilized in space, achieving cost and production rates previously deemed impossible in the aerospace industry. As a Senior DSP Engineer on the Starship RF team, you will be instrumental in creating innovative communication systems and RF sensors, propelling our technology from concept to orbit, the Moon, and Mars! If you are ready to tackle challenges and contribute to making civilization multi-planetary, this is the opportunity for you!

At SpaceX, we envision a future where humanity explores the cosmos, and we are dedicated to making that vision a reality. Our mission is to develop innovative technologies that will enable human life on Mars and beyond.Senior Mechanical Design Engineer - Starship ComponentsThe Propulsion Components team at SpaceX is at the forefront of developing the most sophisticated spacecraft and launch vehicle components globally. As a key contributor, you will leverage your expertise in hardware to design flow and position control devices that are essential for the Starship/Super Heavy Vehicle. From regulators to flap actuators, our focus is on creating components that excel in both manufacturability and reliability under extreme conditions, facing temperatures from 80 to 800 K and pressures exceeding 800 bar. In this role, you will have the opportunity to drive innovative solutions in space technology while collaborating with various teams to ensure seamless integration of vehicle hardware and manufacturing processes, leading projects with your analytical, testing, and mechanical design skills. You will play a pivotal role in influencing vehicle architecture and ensuring the design and flight readiness of Starship, the vehicle destined to make humanity multi-planetary.

At SpaceX, we believe in a future where humanity explores the cosmos, and we are dedicated to creating the technology to make this vision a reality. Our ultimate aim is to enable human life on Mars.SENIOR SOFTWARE ENGINEER, FLIGHT SYSTEMS FOR STARSHIPJoin our innovative team as we develop the Starship spacecraft and Super Heavy rocket, designed as the world’s most powerful reusable transportation system capable of carrying crew and cargo to Earth orbit, the Moon, Mars, and beyond. This groundbreaking vehicle will redefine space travel and exploration.As a Senior Software Engineer on the Starship Software team, you will be responsible for the design, development, and testing of cutting-edge software that controls and simulates our flight systems. Collaborating with fellow engineers across software and hardware disciplines, you will work on all levels of our technology stack, including application, operating system, networking, firmware, and simulation, to drive our mission forward.Aerospace experience is not a prerequisite for success in this role; we seek intelligent, motivated, and collaborative engineers who are passionate about problem-solving and eager to contribute to an inspiring mission.

At SpaceX, we believe that a future where humanity explores the cosmos is more thrilling than one where we remain Earthbound. We are at the forefront of this vision, developing innovative technologies to make interplanetary life a reality, with our ultimate aim being the colonization of Mars.Senior Sourcing Specialist - Mechanical (Starship)Join the pioneering team at SpaceX as a Senior Sourcing Specialist, where your expertise will drive the procurement and fulfillment of valve hardware critical to our Starship program's success. Our supply chain department encompasses procurement, planning, supplier development, quality assurance, logistics, and inventory management. We are looking for a professional who demonstrates exceptional ownership and initiative in a fast-paced environment.

About SpaceX SpaceX pursues new frontiers in space exploration, developing technologies to support human life on Mars and beyond. The team builds and launches hardware that supports missions from satellite deployment to crewed flights to the International Space Station. Role Overview: Manufacturing Engineer, Machining (Starship) This Manufacturing Engineer position focuses on machining for Starship at SpaceX's Hawthorne, CA facility. The role connects engineering and production, shaping both new and existing hardware. The engineer will help guide the design, development, manufacturing, and integration processes for current and next-generation vehicles. What You Will Do Contribute machining expertise to create aerospace hardware for Starship and other vehicles. Work closely with engineering and production to influence hardware design and manufacturing methods. Oversee manufacturing and integration activities for flight hardware.

At SpaceX, we believe in a future where humanity explores the cosmos, and we are committed to making that vision a reality. Our mission is to develop pioneering technologies that will enable human life on Mars and beyond.STARSHIP MECHANISMS ENGINEERAs a Mechanisms Engineer at SpaceX, you will play a crucial role in advancing the reusability of our launch vehicles. Your expertise will be essential in simplifying mechanical systems, enhancing their reliability, and streamlining manufacturing processes. You will design, analyze, and validate mechanical systems and actuators for both Starship and Super Heavy vehicles, focusing on applications such as propellant delivery, control surface actuation, and Raptor thrust vector control. Your innovative contributions will not only improve existing systems but will also help define the next generation of space exploration technology.

SpaceX is seeking a Materials Engineer with a focus on metals to support the Starship program in Hawthorne, CA. This position centers on advancing and refining metallic materials that play a key part in building and improving spacecraft. Role overview The Materials Engineer will work closely with teams from various disciplines to evaluate and select metals used in Starship manufacturing. Day-to-day tasks include studying material properties, running experiments, and contributing to decisions that impact spacecraft performance and safety. What you will do Develop and optimize metallic materials for Starship components Analyze the properties and behavior of metals in demanding environments Collaborate with engineers and specialists across multiple fields Conduct experiments to validate material choices and processes Ensure all materials meet safety and performance standards

Join SpaceX as an Electrical Engineer for the Starship Avionics team, where we are pioneering the future of space exploration. Our mission is to redefine orbital flight and make humanity a multi-planetary species. As part of this elite team, you'll be at the forefront of developing cutting-edge electronics for rockets and spacecraft, working alongside some of the brightest minds in engineering. If you're eager to tackle ambitious challenges and contribute to groundbreaking advancements, we want you on board!

Join SpaceX as a Mechanical Engineer specializing in Starship mechanisms, where you will play a pivotal role in designing, analyzing, and validating cutting-edge mechanical systems and actuators for our revolutionary Starship and Super Heavy launch vehicles. Your expertise will contribute to enhancing the reliability, simplicity, and manufacturability of our systems used in propellant delivery, control surface actuation, and thrust vector control for Raptor engines. You will collaborate closely with cross-functional teams to innovate and improve existing mechanisms while shaping the future of space exploration.

At SpaceX, we believe in a future where humanity explores the cosmos, and we are dedicated to developing the technologies that will make this vision a reality. Our ultimate goal is to enable human life on Mars.MECHANICAL ENGINEER - STARSHIP AVIONICSThe Starship team plays a crucial role in transforming orbital flight and space travel, facilitating humanity's journey to new celestial frontiers and, ultimately, becoming a multi-planetary species. Our team engineers cutting-edge electronics that redefine what is possible in space exploration, achieving unprecedented cost and efficiency in the industry. Specifically, the Starship avionics team is tasked with creating an avionics system designed for optimal reliability, minimal weight, and cost-effectiveness.

At SpaceX, we believe that a future where humanity explores the stars is more thrilling than one where we do not. We are on the cutting edge of developing technologies that make this vision a reality, with the ultimate aim of establishing human life on Mars.SOFTWARE ENGINEER - DISPLAYS SOFTWARE (STARSHIP)As a vital member of the Displays team within the Starship program, you will play a critical role in enhancing our operational capabilities as we increase our flight frequency and manage multiple vehicles in orbit. You will design user interfaces and backend systems that empower vehicle operators to control launch pads and vehicles, assist engineering teams in monitoring system performance, and provide astronauts with essential insights into vehicle health and mission trajectories. Your work will focus on creating seamless user experiences with elegant designs while minimizing software complexity. Your contributions will directly support our mission to return humans to the moon and explore the final frontier.