PROCESS ENGINEER - BATTERY/MOTOR ASSEMBLY/PROCESS MONITORING

About Stark

Stark builds the world’s most powerful electric motorcycles. From the VARG MX to the road-legal VARG EX & SM, our bikes have won world championships and are engineered to outperform anything with a combustion engine.

We’re based in Sant Boi, Barcelona, growing fast (77% year-on-year), and building a team that will take us even further. If you want to work on a product that people are genuinely obsessed with, this is it.

Stark will become the global market leader in premium motorcycles. Building premium motorcycles requires innovation and we need your help to make us succeed

Our mission is to lead the way towards a sustainable motorcycle industry, by reducing plastic and CO2 pollution.

This will be achieved by building sustainable products that are superior to traditional technology in terms of Performance, Emotion and Design.

The Role

We are looking for a Process Engineer – Battery/Motor Assembly & Process Monitoring to join our growing “Production Process Development” team, reporting to the Head of Process Development Production. As a process engineer for the motor/battery/inverter assembly, you will be responsible for setting up parameter and process monitoring for new motor and battery assemblies, at the forefront of the creation of next-generation electric motorcycles, batteries, motors and associated products.

You’ll be responsible for developing the whole process and parameter monitoring with the help of a supplier, defining relevant parameters for each assembly station that need to be monitored, analyzed and controlled in the motor, inverter and battery assembly. You will also support the ramp-up phase of future assembly lines for the street market, consulting Stark’s R&D, production and quality through advice on available assembly parameters, setting up reports, analyses and monitoring drifts or outliers through the assembly process. You’ll need hands-on experience and the ability to thrive in a fast-paced, evolving, and highly innovative environment.

What You’ll Do

• Support setting up a parameter and process monitoring system for the motor/battery/inverter assembly line

• Define relevant parameters for each assembly station to monitor, analyze and control

• Provide automated reports in order to monitor and control the process, giving recommendations to maintenance, engineering and quality

• Build your knowledge of key motor/battery/inverter production technologies — such as dispensing, laser welding, tooling, and leak testing — and act as a point of reference for the team

• Support close collaboration between engineering and other departments across all phases of the project, from prototype through mass production

• Support testing and analysis activities, providing input to engineering and manufacturing teams

• Support the ramp-up of new assembly lines, including build-up activities for motor, battery, and inverter assembly processes, with troubleshooting responsibility for related assembly processes

• Monitor key serial production targets such as scrap rate, consumable cost, and cycle time, and help ensure they’re achieved on time, within the expected quality and cost

• Prepare workshop documentation, including working instructions and production station guides

• Support the whole organization with the data and system being set up, and document all processes, files and learnings

What you will bring to Stark

• Mechanical Engineering degree or similar

• First experience in mechanical design, process development of assembly processes and practical experience in the build-up of HV battery/motor/inverter assemblies

• Strong analytical and problem-solving skills

• Comfortable in a fast-paced, ever-evolving, highly innovative environment (startups or high-tech companies)

• High standards for yourself and everyone you work with, constantly looking for ways to innovate and improve product performance, quality and cost

• Outstanding communication and interpersonal skills; fluent English is a must

Why work with us?

• The chance to work on a product people are genuinely passionate about

• A fast-growing company with real momentum

• A creative, international team based in Barcelona

• Competitive salary and benefits package

• Direct access to riders, race teams, and the product — this is not a remote-from-the-product role

• Subsidized lunch in our in house restaurant

• Free access to our in-house gym (including weekends!)

• 30 days of paid vacation

At Stark, we don’t just accept difference—we celebrate it, we support it, and we thrive on it for the benefit of our employees, our products, and our community.

We are committed to creating an inclusive environment where everyone, regardless of gender identity, sexual orientation, race, religion, age, neurodiversity, or disability, feels a true sense of belonging. We believe that diverse teams make better decisions and that a culture of equity is a prerequisite for innovation.

Accessibility: If you require any reasonable adjustments during the application or interview process (such as assistive technology, extra time, or a specific format), please let us know at [email protected]. We are here to support you.

We encourage applications from underrepresented groups and are excited to see how your unique perspective can help us grow