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 compatibility.

Develop and maintain 3D CAD models and engineering drawings using Autodesk Inventor or a similar tool.

Define and execute verification activities, prepare analysis reports, and provide simulation evidence for design reviews.

Collaborate with mechanical, systems, and project engineering teams to define interfaces, communicate results, and support multidisciplinary design decisions.

Who You Are

You are an analytical and technically rigorous mechanical engineer who enjoys solving complex engineering problems through modelling and simulation.

You take a methodical approach to setting up analyses, checking assumptions, interpreting results, and documenting conclusions.

You can translate complex simulation outputs into clear, actionable engineering decisions.

You identify design risks early and proactively propose practical mitigation strategies.

You communicate clearly with both technical and non-technical stakeholders, adapting the level of detail to the audience.

You collaborate effectively across mechanical, systems, and project engineering disciplines.

You take ownership of the quality, traceability, and accuracy of your analysis work and design evidence.

You are detail-oriented and committed to applying sound engineering fundamentals and standards consistently.

Desirable Skills & Knowledge

Experience performing structural, thermal, dynamic, and fluid-system analysis in a professional mechanical engineering environment.

Proficiency with FEA tools such as ANSYS, Abaqus, COMSOL, or equivalent, together with experience validating and documenting simulation results.

Experience with 3D CAD tools, preferably Autodesk Inventor, and the ability to connect analysis outputs with practical mechanical design decisions.

Knowledge of CFD tools such as ANSYS Fluent or OpenFOAM, vacuum or cryogenic mechanical systems, laser or optical integration, or scientific instrumentation.

Familiarity with design for manufacture and assembly (DFMA), prototype build and commissioning support, verification planning, and engineering documentation in experimental or multidisciplinary environments.