About The Role

Our Team.

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 Mechanical Engineer with a strong hands-on mindset to take responsibility for the mechanical development of our electric powertrain for light commercial vehicles.

In this role, you will take technical ownership of the mechanical architecture and design of key components within our electric drivetrain. This includes the battery, power electronics, motor, gearbox, shafts, bearings, structural components and the interfaces to the vehicle structure.

You will work closely with our design team as well as our electrical and software departments, and support development from concept through calculation and simulation to verification in the vehicle and in the field.

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

What you can contribute.

Be the first technical point of contact for field and service issues on our vehicles.

Diagnose and root-cause problems on vehicles in real operation, both on site and remotely (diagnostics, logs and data).

Coordinate fixes with our workshop, external service partners and the responsible engineers, and see them through to resolution.

Build up and maintain service documentation, repair instructions and spare-parts topics.

Help set up and improve our service and aftersales processes as the fleet grows.

Feed structured field data, failure patterns and customer feedback back into engineering to improve the product.

Support customers and service partners with troubleshooting and basic technical training.

Travel to customer and vehicle sites when needed.

How you will succeed in this role.

Technical education in automotive, mechanical, electrical or mechatronics engineering – apprenticeship with further qualification (e.g. Techniker/in HF), a Bachelor's degree, or comparable.

Attitude and learning speed matter more than years of experience; some exposure to vehicles, machinery or technical service is a plus.

Hands-on mentality, comfortable diagnosing and working on real hardware.

Solid basic understanding of mechanical and electrical systems, and an interest in high-voltage / EV topics.

Structured, self-driven way of working. You get things done and take ownership without waiting for instructions.

Clear communicator with customers, service partners and internal teams.

Fluent German and good English. French is a plus.

Driving licence (category B; category BE or C1 an advantage) and willingness to travel, mainly within Switzerland.

Your environment.

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 like solving real problems on real vehicles, taking ownership and working in an environment where execution matters more than hierarchy, this role is a good fit for you.