Senior Firmware Engineer - Real-Time Control for Power Electronics
Diamond Foundry
Zaragoza, Spain
EUR 50k-65k / year
Posted on Mar 11, 2026
Diamond Foundry Inc. is solving the thermal limitation at the foundation of today's most exciting tech industries -- AI & cloud compute, electric-car power electronics, and 5G/6G wireless. We have managed to produce the world's first single-crystal diamond wafers and are now on a mission to put a diamond behind every chip. We are the rare unicorn that has grown fast and profitably. We received $515m in funding and are executing a multi-$B expansion plan for one of the greenest forms of tech manufacturing: converting greenhouse gas into diamond wafers using zero-emission energy.
Diamond Foundry is seeking a Senior Firmware Engineer specialized in real-time digital control to lead the architecture and development of embedded firmware for high-performance power electronic systems supporting data center, energy conversion, and automotive applications.
This is a highly hands-on technical role focused on real-time control systems, high-frequency power converters, and advanced embedded programming across microcontroller and DSP platforms, ensuring performance, safety, and reliability in demanding industrial environments.
Responsibilities
- Architect and implement real-time digital control firmware for automotive and industrial AC-DC, DC-DC, and inverter systems, including high-speed interrupt-driven control loops and DSP optimization.
- Develop and tune advanced control algorithms (PID, state-space, digital compensators, observers) for high-bandwidth power converters with deterministic timing and loop stability.
- Lead embedded development across multiple microcontroller and DSP platforms, interfacing with ADCs, PWMs, sensors, and gate drivers in high-voltage systems.
- Drive hardware bring-up, system debugging, validation, and performance optimization using professional tools (JTAG, oscilloscopes, logic analyzers), including automated testing and calibration frameworks.
- Develop GUI-based engineering tools (Python or Visual C++), simulation workflows (MATLAB/Simulink), and maintain firmware architecture standards aligned with automotive safety processes (e.g., ISO 26262). Disciplined revision control and documentation a must.
Requirements
- BS or MS in Electrical Engineering, Computer Engineering, Computer Science, or related technical field.
- 5+ years of experience developing real-time embedded firmware in C/C++ for power electronics or high-performance control systems. Automotive development process and safety standards knowledge a plus.
- Proven experience implementing digital control algorithms for high-frequency switching power converters (AC-DC, DC-DC, inverters), with a strong foundation in control theory and DSP.
- Expert proficiency in C\C++ and advanced microcontroller programming techniques in real-time, interrupt-driven environments, including RTOS concepts and low-latency architectures. Strong experience with Git and collaborative development workflows a must.
- Experience with embedded system validation and modeling tools (JTAG, oscilloscopes, logic analyzers, MATLAB/Simulink), and familiarity with automotive development processes such as ISO 26262.
Diamond Foundry believes in supporting our employees from the workplace to their personal and home life. We provide eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. Perks include employee discounts to VRAI. All benefits offered are available starting your first day.
Diamond Foundry is an Equal Opportunity Employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, veteran status, or any other protected factor under federal, state or local law.
50000 - 65000 EUR a year