Firmware Engineer

We're not just looking for someone who can write lines of code; we're seeking an individual who can think beyond code and question the «why» and «how» behind our software engineering processes while understanding the importance of our connection to our customers. As a Firmware Engineer (m/f/d) at STABL Energy, you will drive innovation, solve complex challenges, and contribute to the success of our groundbreaking projects.

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.

• 4+ years of experience in firmware development for power electronics or other embedded systems.
• Comprehensive skills in the C programming language, in particular for embedded devices.
• Expertise on guiding firmware projects to professional standards.
• Strong problem-solving skills and the ability to think critically about software design and architecture.
• Proven ability to design and maintain robust firmware development ecosystems, including build infrastructure, modular frameworks, testing pipelines, and scalable release processes.
• Excellent English communication skills, with the ability to collaborate effectively with cross-functional teams and translate customer needs into technical solutions.
• You have interest and experience with a few of the following:
• Real-time operating systems (RTOS).
• Communication protocols such as SPI, UART, and CAN.
• Microcontroller architectures.
• Continuous integration (CI).
• Testing strategies.
• Product releases and versioning.
• Build systems (e.g.make,CMake).

STABL Energy is one of the most innovative start-ups in the energy transition, ees Award winner 2022, pv magazine award winner 2025 and named a global Top100 Energy Start-up. We are funded by renowned and experienced Tech VCs from Germany, Denmark and Switzerland.