Test Engineer BESS (m / f / d)

Your Role

We are looking for a skilled and analytical Test Engineer (m / f / d) to drive system-level validation of our Battery Energy Storage Systems (BESS).

You will help build the foundation of our testing function by defining processes, infrastructure, and tools as production scales. The role focuses on validating complete BESS and key subsystems to ensure functionality, reliability, and safe integration of mechanical, electrical, and software components. Additional tasks may include ECAD support, PLC logic implementation, and development of EoL / FAT tooling.

Your mission

System & Subsystem Testing

• Plan, execute, and document system- and subsystem-level BESS tests.
• Verify integration of electrical, software, thermal, and safety systems.
• Conduct functional, performance, and regression tests.
• Analyze deviations and support troubleshooting and root-cause investigations.
• Develop scalable test procedures and contribute to the long-term testing roadmap.

Building the Testing Function

Documentation & Compliance

Additional Engineering Tasks

Your profile

Why STABL Energy?

STABL Energy is one of the most innovative start-ups in the energy transition, ees Award winner and named a global Top100 Energy Start-up. We are funded by renowned and experienced Tech VCs from Germany, Denmark and Switzerland.

What you’ll love about working with us :

Company EGYM Wellpass membership to train with no limits at numerous fitness clubs across Germany

Ready to innovate, impact, and inspire? Apply Now!

We’d love to hear from you to help us build the energy system of the future! Even if you don’t meet 100% of the requirements, we encourage you to apply anyway. Our motto is 'Hire for attitude, train for skills', so we value potential and lifelong learning just as much as experience.

STABL Energy paves the way for a net-zero energy system by making battery storage safe, reliable, and sustainable.

We're at the forefront of transforming the way the world utilizes old car batteries. Through cutting-edge technology, we've harnessed the power of old batteries to create revolutionary stationary battery storage systems. As we embark on our journey to expand in the DACH region, we're driven by innovation, ambition, and the aspiration to make a meaningful difference. Following our recent success with pilot projects and an influx of 15m€ in venture capital, we're gearing up for significant growth and expansion.