Thermal Systems Engineer

No longer listed
Open Cosmos
Didcot, United Kingdom · Barcelona, Spain · Porto, PortugalThermal EngineerPosted Apr 28, 2026
This website uses cookies to ensure you get the best experience. Open Cosmos and our selected partners use cookies and similar technologies (together “cookies”) that are necessary to present this website, and to ensure you get the best experience of it. If you consent to it, we will also use cookies for analytics purposes. See our Cookie Policy to read more about the cookies we set. You can withdraw and manage your consent at any time, by clicking “Manage cookies” at the bottom of each website page. Accept all cookies Decline all non-necessary cookies Cookie preferences Select which cookies you accept On this site, we always set cookies that are strictly necessary, meaning they are necessary for the site to function properly. If you consent to it, we will also set other types of cookies. You can provide or withdraw your consent to the different types of cookies using the toggles below. You can change or withdraw your consent at any time, by clicking the link “Manage Cookies”, which is always available at the bottom of the site. To learn more about what the different types of cookies do, how your data is used when they are set etc, see our Cookie Policy. Strictly necessary These cookies are necessary to make the site work properly, and are always set when you visit the site. Vendors Teamtailor Analytics These cookies collect information to help us understand how the site is being used. Vendors Teamtailor Accept these cookies Decline all non-necessary cookies Skip to main content Career menu Employee Log in as employee Candidate Log in to Connect Homepage open-cosmos.com CTO · SYSTEMS · Harwell, UK · Hybrid Thermal Systems Engineer Apply for this job Aim high, go beyond!At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever before - ready for the challenge? Then read on…Working in our Chief Technology Office (CTO)The CTO division is where Open Cosmos technology comes to life. Covering engineering, product development, and technical innovation, the team designs, builds, and operates the satellites, systems, and platforms that make our missions possible. It’s a highly collaborative environment where ideas become real hardware, software, and data solutions that deliver impact from space.Our Systems Team brings together brilliant Systems, AOCS and Thermal Engineers who turn ambitious mission concepts into reality. They design, integrate, and optimise every detail – from spacecraft architecture to next-generation optical payloads – making sure every system fits, works, and thrives in orbit. From first sketch to launch day, they own the journey, ensuring our satellites deliver maximum impact back on Earth.What You'll Be DoingYou’ll run the thermal work package for multiple missions, model and analyse spacecraft thermal behaviour, and plan and run thermal tests. You’ll work hands-on during AIT, support anomaly resolution, and be part of the team that ensures Open Cosmos missions perform as expected in space.You’ll also collaborate with our other subsystem engineers, feed into our product roadmap, and help us continuously improve how we design and deliver missions.What You’ll BringWe’re looking for someone who combines technical depth with a collaborative spirit. You should have:Strong knowledge of spacecraft thermal control and space thermal environments.Proficiency with thermal modelling tools (e.g. ESATAN-TMS, Thermica, Thermal Desktop).Proven ability to plan and deliver thermal tests from start to finish.Solid understanding of satellite subsystems and confidence working across disciplines.Knowledge of mission analysis and overall space system design.Clear communication skills –...

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