Senior Thermal and Fluidics Systems Engineer (CEA)

Interstellar Lab

Senior Electronic Engineer Full-time In-person   At Interstellar Lab, our mission is to build a future full of life, on Earth and beyond. We believe in a world where technology enables humans to live in harmony with nature, where biodiversity thrives and expands, and where terrestrial life becomes multi-planetary. To build this future, we design autonomous biospheric systems to grow plants with precision, on Earth and in Space. Our AI-powered BioPods and BioCapsules leverage biosciences to reproduce and optimize growth conditions for a wide variety of high-value plants. On Earth, we pioneer molecular and biofarming, boosting the production of metabolites and bioactive compounds while offering sustainable, traceable, and high-quality natural ingredients to the beauty, fragrance, pharmaceutical, and nutraceutical industries. In space, we collaborate with agencies and private companies to develop biofarming units that advance life science research in microgravity and lay the foundation for future biofactories in space, enabling innovative terrestrial applications and long-duration space missions.   About the Role As Senior Electronic Engineer, you will own the design, development, and validation of Interstellar Lab’s electronic systems. You will work closely with mechanical and embedded software engineers to create reliable, high-performance electronics supporting automation, control, and monitoring of our biospheric systems. Some projects will involve space-rated hardware, requiring a strong balance between creativity, precision, and compliance with aerospace standards.   Responsibilities * Design and layout electronic schematics and PCBs (KiCad or Altium) * Select components, define stackups, and ensure manufacturability and serviceability * Lead mechanical and electrical integration with product and systems teams * Collaborate with suppliers for PCB fabrication, assembly, and production follow-up * Plan and implement EMC mitigation and reliability strategies (ESD, surge, derating) * Conduct board bring-up, debugging, and validation testing using standard lab tools * Create test plans, validation documentation, and track issue resolution * Support development of embedded test firmware in collaboration with software teams   Profile / Qualifications * 6+ years of experience in electronic design for industrial, aerospace, or consumer products * Proficiency in schematic design, PCB layout, and DFM/DFT principles * Experience with EMC/EMI mitigation and validation testing * Familiarity with microcontrollers (STM32 or similar) and communication buses (RS-485, I2C, SPI) * Experience managing EMS/SMT suppliers and prototype production * Exposure to SSP 57000 requirements or similar aerospace standards is a plus * Strong analytical, documentation, and troubleshooting skills * Fluent in English, French is a plus   Equal Opportunity Interstellar Lab is proud to be an equal opportunity employer. Interstellar Lab does not discriminate on the basis of race, regional color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with disability, or other applicable legally protected characteristics.

Graphcore

ABOUT THE JOB Help bring the next generation of AI hardware from design into high volume manufacturing. You'll lead the industrialisation of advanced thermal cooling solutions for AI compute processors and accelerator systems. Your work will ensure designs can be built reliably, validated efficiently, and scaled for production. You'll shape manufacturing processes for cold plates, thermal interface materials, and mechanical assemblies. You'll work closely with design teams, manufacturing partners, and specialist suppliers to solve complex engineering challenges. This role offers broad technical ownership and the opportunity to influence products from development through to manufacturing deployment across a global supply chain. THE TEAM AND CULTURE You'll join the Manufacturing Technology team within Manufacturing Operations. The team works across Bristol, Cambridge, India, Taiwan, and the US to develop robust manufacturing processes for advanced hardware. Day to day, you'll work closely with engineering, operations, quality teams, and manufacturing partners. Decisions are driven by technical evidence, testing, and continuous improvement. You'll take ownership of manufacturing readiness, solve issues during build cycles, and help improve quality, yield, and production capability. WHAT WE'RE LOOKING FOR ESSENTIAL:  * Strong experience in thermal, mechanical and/or manufacturing engineering  * Experience bringing complex electromechanical products from development into high-volume production.  * Strong understanding of thermal management technologies for high-power electronics, including:  * Liquid cooling systems, cold plates and vapour chambers  * Heat sinks and heat spreaders  * Thermal interface materials (TIMs)  * Mechanical retention and mounting systems  * Solid understanding of thermal management principles (heat transfer, cooling solutions, TIMs, etc.)  * Experience with DFM (Design for Manufacture), manufacturing processes, assembly, and tolerancing  * Master’s degree in Mechanical Engineering, Thermal Engineering, Manufacturing or a related discipline  DESIRABLE:  * Experience with thermal and/or mechanical simulation tools (CFD / FEA)  * Knowledge of PCB design and manufacturing technology  * Knowledge of qualification and reliability testing of mechanical and thermal assemblies  BENEFITS * Unlimited annual leave * Up to 5% matched pension * Phantom equity – share in Graphcore's success * True flexibility in how and where you work * Office spaces designed for collaboration * Free food and an on-site barista * Health cash plan * Income protection * Life assurance * Along with other benefits you can choose from (private medical insurance, dental plan etc) We welcome people from all backgrounds and experiences and are committed to building an inclusive environment where everyone can do their best work. We're an equal opportunity employer and recognise that everyone brings different strengths and perspectives. If you need any adjustments during the interview process, just let us know. We're happy to support you. JOIN THE TEAM AT GRAPHCORE Graphcore is building the compute platform for the next generation of artificial intelligence. From advanced silicon to intelligent software, our technology is designed to unlock breakthroughs in AI and bring its benefits to every industry. As part of the SoftBank Group, we're backed by one of the world's most ambitious technology investors, working alongside companies shaping the future of AI. Together, we share a bold goal: to help enable artificial superintelligence and ensure it delivers meaningful impact at a global scale. At Graphcore, you'll work with people who are pushing the boundaries of what's possible. Our teams bring together AI researchers, chip designers, software engineers and systems experts from a wide range of backgrounds. It's an environment where we take on big challenges with curiosity and focus, move quickly and decisively, take real ownership of our work, and speak up to challenge ideas, stepping up to support each other and lead through action. If you want to help bring advanced AI hardware into production at scale, we'd love to hear from you. Apply now to join Graphcore.

Isar Aerospace

Mission Brief  You will be responsible for defining the thermal environment and architecture of the vehicle, ranging from detailed thermal modeling and system level coupled loads analyses and to active and passive thermal control design. You will be in charge of the development, execution, and correlation of thermal models using FEM/FDM/FVM tools and test data. The decisions you make will directly support hardware qualification, test planning, and system-level design choices, ultimately enhancing the thermal robustness, performance, and reliability of the vehicle throughout its mission. Your Role in Our Space Mission:  * Own the vehicle-level thermal architecture, including active and passive thermal control design for the avionic components and payloads * Perform Thermal Coupled Loads Analysis and develop detailed thermal models using FEM and/or FVM, FDM methods * Develop, execute, and correlate thermal models using tools such as SIMCenter, STAR-CCM+ and Thermal Desktop supported by component tests and flight data * Review, assess, and approve component- and assembly-level designs for thermal flight readiness * Create and maintain specifications and design documentation such as Fluid Plans, Test Plans and Procedures, Test and Analysis Reports, Instrumentation Plans, Work Instructions etc. * Develop tools, workflows, and standards to improve efficiency, consistency, and repeatability across thermal engineering activities * Support integration, test, and launch-site operations as subject-matter expert on system thermal performance * Support with your expertise other technical departments   Qualification Checklist    * Degree in the field of Aerospace of Mechanical Engineering, or similar * 8+ years of relevant experience in the field of aerospace and thermal * Experience with thermal simulation tools (e.g. ANSYS, SIMCenter, Thermal Desktop) * Experience with coding (e.g. Python, MATLAB) * Holistic perspective on development of systems  * Highly organized and proactive with high attention to detail  * Good communication and organizational skills  * Fluent in English  Bonus Skills * Experience with environmental control system design * German language skills Benefits  * Employee Participation Program: Share in our success through our virtual company share program * 30 days of vacation: Enjoy the days off to relax and recharge * Company pension plan: Secure your future with our company pension plan, featuring a 20% employer contribution after the probation period * Subsidised lunch: Stay energised with delicious, subsidised lunches every day * Public transport ticket: Commute with ease using a fully financed Deutschlandticket * Sport Clubs membership: Stay fit with our sponsored sports club memberships (EGYM Wellpass) * Individual learning allowance: Grow your skills with an individual learning budget granted after the probation period * Childcare allowance: Receive a childcare allowance for your non-school-age children * And Much More! Discover additional perks and benefits when you join our team         Who we are We are Isar Aerospace and we are at the forefront of New Space building a modern space business to enable faster, better and cheaper access to space. Our mission is to help democratise space and use it for good in order to improve life on Earth now and for the future generations. We are a fast-growing company aiming to provide sustainable and environmentally friendly launch solutions for small and medium-sized satellites and constellations into Low Earth Orbit. The company is privately funded by world-leading technology investors with strong commitment and support and our team is made of driven and talented people with a real passion for space innovation. We're making rockets in a way that hasn't been done before disrupting a traditional industry. If you are up for the challenge, want to work on cutting-edge projects and be part of a team changing the world for better, come, join us and launch your career! Want to find out more about us? Visit www.isaraerospace.com Data Protection We process your personal data for the purpose of managing the recruitment process and assessing your application. For detailed information on how your data is processed, including your rights, please refer to our Privacy Policy. Disclaimer Isar Aerospace SE is an equal-opportunity employer committed to fairness and inclusivity. We do not prioritize any specific religion, gender, nationality, or background. Due to security clearance requirements, affiliations with countries listed under § 13 para. 1 no. 17 SÜG may affect the application process. All qualified applicants are encouraged to apply. We use Metaview to record interview audio so our team can review it later and stay focused during the conversation. We will record interviews only if you opt in. Please note that we will request your consent separately during the interview process. Participation is completely voluntary and will not affect your application in any way. For more information on how we process your personal data, please see our Privacy Policy