Mechanical Engineer – Design & Simulation (f/m/d)

About Focused Energy Focused Energy is building the future of clean energy through laser-driven inertial fusion. Backed by our $240M Series A - the largest fully secured Series A in the global fusion industry we are scaling rapidly across multiple geographies.

Based in Germany and the US, we have brought together the top scientific and engineering minds using proven technologies to unlock fusion power at commercial scale.

Focused Energy is working to realize game-changing scientific innovation that promises to deliver a clean, sustainable and abundant source of power globally.

About the Role

As a Mechanical Engineer – Design & Simulation, you’ll perform engineering analysis and simulation work across Focused Energy projects, helping design and validate complex mechanical systems before hardware is committed.

You’ll provide the analytical confidence needed to make sound design decisions across structural, thermal, dynamic, and fluid-system performance.

Working closely with senior mechanical engineers, systems engineers, project teams, and other engineering disciplines, you’ll use modelling and simulation to identify design risks early, recommend mitigations, and ensure mechanical designs are technically sound, manufacturable, safe, and ready for integration.

Your work will contribute to systems including vacuum chambers, laser integration, diagnostic structures, and facility infrastructure. What You’ll Do Perform structural, mechanical, and thermal analysis using FEA tools such as ANSYS, Abaqus, COMSOL, or equivalent.

Carry out fluid-system analysis and thermal modelling to support mechanical design decisions. Assess vibration, stability, and dynamic behaviour of mechanical assemblies and identify potential design risks. Validate simulation outputs against design requirements, engineering standards, and expected operating conditions.

Translate analysis results into practical design recommendations that improve performance, safety, manufacturability, and system compat