Firmware Engineer

About Stark

Stark builds the most powerful electric motorcycles in the world. From the VARG MX to the road-homologated VARG EX and SM, our bikes have won world championships and are designed to outperform any combustion-engine vehicle.

We are based in Sant Boi, Barcelona; we are growing fast (77% year over year) and building a team that will take us even further. If you want to work on a product people are truly passionate about, this is your place.

Our mission is to lead the way towards a sustainable motorcycle industry, reducing plastic and CO₂ pollution, with products that outperform traditional technology in performance, emotion and design.

The role

We are looking for a Power Electronics Firmware Engineer to develop the firmware for our inverters, chargers and power control systems. You will report to the Head of Powertrain Electronics and work very closely with the hardware team.

This is a 100% on-site position at our headquarters in Sant Boi (Barcelona).

What you will do

• Develop embedded firmware for motor controllers, inverters, chargers and BMS, from development through to production release.
• Implement drivers, bootloaders, communications (CAN, LIN, SPI, I2C) and control algorithms.
• Define and run test plans, validation and firmware reviews, including risk analysis.
• Support product homologation activities.
• Diagnose faults, perform root cause analysis and implement corrective actions.
• Document the firmware and comply with functional safety and performance standards.

What you will bring to Stark

• Degree or master's in Electrical Engineering, Electronics, Computer Science or similar, specialised in embedded systems.
• Experience developing firmware in C/C++ for ARM Cortex microcontrollers (or FPGA) in power electronics.
• RTOS, tools such as Keil/IAR, and version control with Git.
• Ability to read schematics and work with analog and digital hardware.
• Nice to have: motor and charger control, ISO 26262, Matlab/Simulink, automotive or motorsport experience.
• Fluent English.

Why work with us?

• The opportunity to work on a product people are truly passionate about.
• A fast-growing company with real momentum, and room to grow in responsibility and autonomy.
• A creative, international team based in Barcelona.
• Competitive salary and benefits package.
• Direct access to riders, racing teams and the product itself: this is not a remote role far from the product.
• Subsidised meals in our in-house restaurant.
• Free access to our in-house gym (weekends included!).
• 30 days of paid holiday.

Commitment to diversity

At Stark we don't just accept difference: we celebrate it, support it and are enriched by it for the benefit of our people, our products and our community.

We are committed to building an inclusive environment where everyone, regardless of gender identity, sexual orientation, race, religion, age, neurodiversity or disability, truly feels they belong. We believe diverse teams make better decisions and that a culture of equity is essential for innovation.

Accessibility: if you need any reasonable adjustment during the application or interview process (for example assistive technology, extra time or a specific format), write to us at HR@starkfuture.com. We are here to help.

We encourage people from underrepresented groups to apply, and we look forward to discovering how your unique perspective can help us grow.