Senior Engineer for Peripherals (f/m/d)

MAGNOTHERM builds refrigerant-free magnetocaloric cooling systems.

Our STELLAR program builds them big — and while the magnetocaloric core gets the headlines, the machine around the core is what makes it a product: hydraulics, heat rejection, power and control electronics, software, and the container-format frame that carries it all. That platform is one machine that hosts every generation of our magnetocaloric core: the core is swapped out, the platform stays. You lead the team that builds it — electrical, thermo-fluid, structural, and design engineers — delivering the thermal-hydraulic architecture, the system’s efficiency, and the platform every other team docks onto. If the core is the heart, you build everything else — and you own how well the whole machine performs.

Must-have skills & experience

• Degree in mechanical, process, or energy engineering with strong thermo-fluids fundamentals; 5+ years designing thermal-hydraulic systems in hardware that shipped — chillers, heat pumps, process cooling, plant engineering, or similar.
• Hydraulic system design at machine scale: piping, pumps, valves, reservoirs, instrumentation — and the pressure-drop and heat-balance calculations behind them. 

• Heat-exchanger and heat-rejection competence: sizing, selection, and integration of air- and water-side heat exchange at industrial capacity.
• System integration experience: you’ve owned a machine-level design with electrical, software, and structural contributors, and held interfaces between parallel workstreams.
• Team leadership: you’ve led a small engineering team through design, build, and commissioning — planning, delegation, reviews, and the accountability that goes with it.
• Efficiency mindset: you think in COP, part-load behavior, and parasitic losses, and you can defend a design-point choice with numbers.
• Working style: hands-on lead who still opens the CAD and walks the build floor, clear documentation, calm under integration pressure. 

• English language skills (C1+), German language skills (C1+).  

Nice to have

• Refrigeration or heat-pump system design background (including natural-refrigerant or water-based systems).
• Controls literacy: you can read a state machine and a piping & instrumentation diagram (P&ID) with equal comfort, and speak the software team’s language.
• Commissioning experience: fill/flush, hydraulic balancing, electrical bring-up, performance testing of large thermal systems.
• Experience with container-format or skid-built plant: transportability, lifting, site installation.
• Familiarity with the relevant standards landscape for chillers and pressure/electrical safety.
• Prior work in a startup or first-of-kind development environment.

• Flexible hours and 30 days of vacation. 
• Compensation aligned with startup standards, with room to grow as the company scales. 
• A team that's sharp, interdisciplinary, and doesn't take itself too seriously. 
• The chance to pioneer technology that actually helps the planet. 
• Ownership, responsibility, and a culture where learning from mistakes is expected. 
• A front-row seat as a deep-tech company scales. 
• Memes. Good ones. And lots of them. 

PS: We are a big fan of cover letters. They don't need to be long, but getting the general idea of who you are and what motivates you helps in the application selection. A portfolio of work you can share externally is also welcome.

Studies by several different sources have shown that, on average, men will apply for a job if they meet 60% of the application requirements. In contrast, women/non-binary people will seek to match a much higher percentage of the requirements before applying.

We encourage everyone to apply and give us a chance to evaluate your skills and experience. We are all learning on the job, and although the listing above has been carefully compiled, we are also open-minded and interested to hear about the value you can bring to the role and MAGNOTHERM.