Senior Development Engineer Production (m/f/d) - EFT Mobility AG

Join EFT Mobility at a pivotal time as we revolutionize the future of electric transport, focusing on cutting-edge Electric Powertrain (EFT) solutions for high-reliability applications, including UAV power systems. We are a fast-growing, dynamic company where every engineer plays a direct, hands-on role in bringing our innovative, safety-critical products to life. If you thrive on ensuring product quality and solving complex, real-world problems, we want you on our team.

We are seeking a proactive and detail-oriented Senior Development Engineer Production to bridge the gap between initial design and long-term product success. You will be the technical lead for our battery products once they hit the (outsourced) production line and the field. This role requires a detective mindset to solve field failures, a builder mindset to coordinate reworks, and a leader mindset to manage our battery fleet and manufacturing partnerships.

What is your Day to Day Mission:

Production Engineering

• Define Begin of line, In-Line and End of line criteria and implement together with Contract Manufacturer and internal design team

• Design & test production fixtures for early internal prototype builds

Failure Analysis & Root Cause Determination

• Perform deep-dive teardowns and data analysis to identify root causes of battery and charger failures.

• Coordinate with the design team to implement permanent fixes and ensure these improvements are integrated back into the active production line.

Fleet & Lifecycle Management

• Supervise and document the rework of internal battery packs to maintain peak testing capacity.

• Manage the health and inventory of the internal battery fleet used for R&D, testing, and production support

Engineering Change Management (ECM)

• Collaborate with the Engineering team and Contract Manufacturers (CMs) to analyze and validate hardware or process changes.

• Provide on-site or remote monitoring of change implementations on the production line to ensure zero loss in quality.

• Validation: Design and execute rigorous test plans to verify that changes meet safety and performance standards before customer shipment.

Field Campaign Coordination

• Organize and lead large-scale rework or retrofit programs for battery sets already deployed in the field.

• Develop specialized tooling or instructions for field technicians to ensure reworks are performed safely and consistently.