Stack Area (Fuel Cell Stack / Engineering)

At Kerionics, we are on a mission to build a cleaner future through technological innovation.

We develop, manufacture and commercialize key components for high-temperature electrolyzers, focusing on SOEL (Solid Oxide Electrolysis), the most efficient technology for green hydrogen production.

We are a spin-off of the Institute of Chemical Technology (ITQ) at the Polytechnic University of Valencia (UPV) and the Spanish National Research Council (CSIC), born from more than a decade of research in advanced ceramic materials with one clear goal: help decarbonize industries.

Our innovative technology offers higher energy efficiency than existing solutions, making it ideal for industrial integration. We work with energy-intensive process industries where fossil fuel replacement is still a big challenge, helping to cut emissions while also reducing hydrogen and oxygen production costs.

But beyond technology, our people are our strength. We're a growing multicultural team of 20+ people, united by collaboration, curiosity and purpose. At Kerionics, we believe in an open, honest and innovative culture where every idea can make an impact.

Here, you'll find a place where technology meets purpose, and where together we're creating solutions that work for the planet.

As a Stack Intern, you will collaborate with the engineering team on the design, prototyping, and validation of fuel cell stacks. You will participate in integration tasks, functional testing, data analysis, and component optimization. You will be part of a highly innovative environment where engineering, hardware, and science converge to create high-impact solutions.

• A valid student visa that permits residency and internship work in Spain is required.
• Basic knowledge of Industrial, Mechanical, Aerospace Engineering, or a related field.
• Basic knowledge of mechanical design and CAD modeling (SolidWorks or similar).
• Interest in fuel cells, clean energy, or hardware design.
• Analytical skills and strong attention to detail.
• Collaborative mindset and good communication skills.