About this role
Your Role
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.
Your mission
* Design, implement, and test firmware for our cutting-edge power electronics products.
* Continue to implement new ways of assuring firmware quality.
* Collaborate with cross-functional teams to define project requirements and objectives, with a keen focus on meeting and exceeding customer expectations.
* Evaluate and optimize existing firmware code to enhance performance, reliability, and efficiency.
* Mentor and guide junior engineers, fostering a culture of continuous learning and improvement.
* Promote best practices in software engineering, emphasizing the importance of a holistic approach beyond just coding and its direct impact on customer satisfaction.
Your profile
* 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).
Why STABL Energy?
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.
What you’ll love about working with us:
* Agile, open & innovation-driven culture with flat hierarchies, quick decision-making processes and real ownership
* Company pension scheme to support you plan for the future
* Flexible working hours, a hybrid work model, and the option to work remotely from abroad
* Digital meal vouchers with Circula Lunch - enjoy tasty lunches on us!
* Monthly benefit in kind to spend at your favourite stores
* Corporate benefits portal with exclusive employee discounts
* Regular team-building activities and team events
* 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.