Thermal Systems & Mechanical Engineer

A strong team is the DNA of our company.

Our team brings together experts in Mechanical Engineering, Software, E/E, Manufacturing, Homologation, Testing, Purchasing, Business Development, and Sales & Marketing. At Flux, we work as equals and foster a highly motivating environment shaped by shared ownership, flat hierarchies, and a strong team spirit. Here, you will not only develop your skills, but also make a real impact. Join our team and help shape the mobility of tomorrow.

Your role.

We are looking for an experienced Thermal Systems & Mechanical Engineer to take technical ownership of the thermal management of our electric light commercial vehicles and the mechanical design that goes with it.

In this role, you own the thermal architecture of the vehicle: battery cooling and heating, power electronics and e-motor cooling, cabin climate, and the coolant and refrigerant circuits that connect them. You size these systems, design and integrate the mechanical hardware (pumps, valves, heat exchangers, lines and mounts) and make sure they work together across the full operating range, from alpine winters to fully loaded summer duty cycles.

You work closely with our mechanical, electrical and software teams. You define the thermal requirements and operating strategy together with software, and support development from concept through simulation and calculation to verification in the vehicle and in the field.

At Flux, you will work in a small team with short decision-making paths. You take ownership of technical decisions early and directly shape the architecture of our vehicles.

At Flux, we develop electric commercial vehicles in small, highly responsible teams. Our vehicles are already operating in the real world, on construction sites, in cities and in the daily operations of our customers.

That means decisions are made close to the product. Engineers take responsibility for their systems throughout the entire development cycle, from concept and testing through to issues seen in the field.

If you enjoy developing robust thermal and mechanical solutions, taking ownership and working in an environment where execution matters more than hierarchy, this role is a good fit for you.