Propulsion Test Engineer (m/f/d)

Isar Aerospace

Mission Brief  You will maintain, troubleshoot and upgrade the control system of the Isar rocket engine test facility near Kiruna (Sweden). You will assume technical responsibility for both software and hardware elements of the control system. There will be close collaboration with the Isar Munich control systems team for work on both this facility, and other future projects. You will be involved in day-to-day test operations, and will work alongside Propulsion Test Engineers to operate the facility. It is expected that there will be a close connection to the other test engineers, and development of a deep understanding of facility systems and requirements. Your Role in Our Space Mission:  * Develop PLC software for existing and future control systems in Kiruna * Design PLC hardware setups and PLC-related networks * Perform risk analyses and design safety-critical electrical systems * Commission control systems and maintain/upgrade them * Be responsible for hardware and software related topics on site * Perform rocket engine tests as part of the local test engineering and operations team Qualification Checklist  * Either a degree in electrical engineering, automation technology, or similar, or a certified engineer in automation technology * 2+ years of experience in automation and PLC technology * Fluent in English * Experience in the field of PLC programming (soft-PLC) and commissioning preferably using Beckhoff TwinCAT 3 or CODESYS based systems * Experience in giving technical support and troubleshooting in the field and remotely * Knowledge about fieldbus systems * Basic understanding of electrical schematics Bonus Skills * Knowledge of sensors/sensor signals and test equipment * Experience designing and building PLC systems to EU and international standards, preferably with Beckhoff controllers * Experience with functional safety system design and implementation Benefits * Employee Participation Program: Share in our success through our virtual company share program * 25 days of vacation: Enjoy the days off to relax and recharge * Subsidised lunch: Stay energised with delicious, subsidised lunches every day * Sport Clubs membership: Stay fit with our allowance for wellness activities * Individual learning allowance: Grow your skills with an individual learning budget granted after the probation period * Relocation help: we offer temporary housing accommodation in Kiruna to support you during your transition period until you secure your own residence * 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.

Isar Aerospace

Mission Brief  As a Design Engineer your main task is to support the combustion team in the design of components and assemblies of rocket engine combustion devices. These include the thrust chamber assembly consisting of the injector head, chamber, nozzle and nozzle extension, as well as the gas generator and the ignition system.  Your Role in Our Space Mission  * Perform CAD design and fluid-dynamics analysis of combustion devices components. * Participate in the entire design cycle of combustion devices from layout to component design of injector elements, manifolds, cooling channels, chamber, nozzle, gas generator and ignition system to the maturation of these components and the overall system through testing. * Be in contact with the production department to ensure that the designs comply with the chosen manufacturing methods and to track the manufacturing status of critical components. * Develop and mature tools specific to the design and development of combustion components. * Perform CFD calculations for reacting and non-reacting combustion devices parts. * Ensure component and system performance through development testing, design iterations and post-test data reviews. * Optimize thrust chamber assembly, gas generator and ignition system parts with regards to manufacturability and weight reduction.  Qualification Checklist * M.Sc. degree in mechanical engineering, aerospace engineering or similar * 2+ years of professional experience in propulsion systems design, analysis or testing * Experience with rocket engine or gas turbine component development including combustion chambers, nozzles, injectors, ignition systems * Hands on experience in testing preparation and operation as well as post-test data reviews * Experience with cryogenic fluids and oxygen compatibility * Exceptional comprehension of engineering fundamentals: fluid dynamics, combustion and heat transfer * Proficiency in 3D CAD programs (SolidWorks & SiemensNX preferred)  * Proficiency in Python, Matlab or similar programming language  * Passion for rocket propulsion and space * Ability to effectively collaborate on multi-disciplinary and cross-functional teams * Highly organized and proactive with high attention to detail * Driven and eager to learn * Willingness to travel in support of launching and testing hardware Bonus Skills * Experience with numerical tools such as ANSYS Mechanical and/or ANSYS Fluent/STAR-CCM+ or similar for reacting CFD * Working knowledge of engine fluid components such as valves and pressure regulators * Experience in manufacturing  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.

Isar Aerospace

Mission Brief  As a Mission Analyst in the Reusability Program, you model and optimize ascent, reentry, and recovery concepts for our next‑generation launcher. Initially supporting ESA reusability studies, you translate Spectrum test insights into mission‑level performance assessments and constraints. You run trajectory optimization and Monte Carlo analyses to de‑risk key design choices. Your results directly inform vehicle architecture, flight‑dynamics decisions, and broader program planning.  Your Role in Our Space Mission  * Run end‑to‑end mission and trajectory optimization for ascent, reentry, and recovery scenarios, structuring problems for coupled multidisciplinary analysis and delivering actionable performance insights to inform system‑level decisions. * Perform trajectory analyses and MonteCarlo simulations to assess sensitivity to dispersions, environmental variations, and vehicle uncertainties.  * Conduct mission planning and performance assessments for nearterm demonstrators and future HLV configurations.  * Develop and execute multidisciplinary design optimization (MDO) studies and design‑space exploration to integrate propulsion, aerodynamics, structures, mass properties, thermal constraints, GNC effects, and operational assumptions, comparing mission‑level outcomes across vehicle configurations, recovery concepts, and constraint sets to inform architectural trade‑offs. * Maintain and evolve missionanalysis models and workflows, ensuring consistent, traceable, reproducible, and scalable setups and clean analysis outputs.  * Produce clear, highquality missionanalysis documentation for internal reviews and ESA deliverables.  * Coordinate missionrelated inputs with specialists in propulsion, structures, fluids, GNC, and systems, ensuring mission assumptions remain coherent and technically consistent. * Support programlevel decisions by delivering structured results, scenario comparisons, and datadriven recommendations.  Qualification Checklist  Education & Technical Background  * Master’s degree in aerospace, mechanical engineering, or an equivalent technical field.  * Solid theoretical foundation in flight mechanics, trajectory dynamics, orbital mechanics, and atmospheric flight.  * Understanding of reusability concepts for launch vehicles, including ascent–entry coupling and performance constraints, and their implications on multidisciplinary mission‑level trade‑offs.  Experience  * Experience in mission analysis, trajectory simulation, or related GNC/flightdynamics work. * Practical experience with trajectory optimization frameworks, numerical solvers, and simulation environments, including problem formulations that enable coupled, multidisciplinary analysis. * Familiarity with MonteCarlo methods, sensitivity studies, and statistical evaluation of mission outcomes.  * Background working with crossdisciplinary datasets (aero, propulsion, structural, environmental), integrating them within mission‑level or MDO‑style analysis workflows. * Proficient with Python (MATLAB or other languages commonly used for data analysis are a plus)  Skills & Competencies  * Strong analytical and mathematical modelling skills; able to develop and maintain reusable simulation workflows, including coupled, multidisciplinary problem formulations. * Ability to work with MBSE‑aligned environments and multidisciplinary design optimization (MDO) toolchains (e.g., SysML, Valispace, ModelCenter, Ansys SAM, Flow, OpenMDAO, Isight or similar) to connect mission analysis with systemlevel architecture.  * Able to synthesize complex results into concise, decisionoriented documentation and presentations.  * Clear communication skills and the ability to coordinate independently and effectively with domain experts in propulsion, GNC, structures, fluids, and systems. * Strong ownership mindset and commitment to delivering highquality results reliably and on time. * Fluent in English (German is a plus)  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.