Mechanical Engineer – Design & Simulation (Fusion)

Location: Darmstadt, Germany

Company

hirify.global develops laser-driven inertial fusion technology to enable clean, sustainable, and abundant power at commercial scale.

What you will do

• Perform structural, mechanical, thermal, fluid-system, vibration, stability, and dynamic analyses for complex mechanical systems.
• Use FEA and simulation tools to identify design risks, validate performance, and recommend mitigations.
• Develop and maintain 3D CAD models and engineering drawings using Autodesk Inventor or an equivalent tool.
• Translate analysis results into design recommendations covering performance, safety, manufacturability, and system compatibility.
• Define verification activities, prepare analysis reports, and provide simulation evidence for design reviews.
• Collaborate with mechanical, systems, project, and other engineering disciplines on interfaces and multidisciplinary design decisions.

Requirements

• Analytical, technically rigorous approach to complex mechanical engineering problems involving modelling and simulation.
• Methodical execution of analyses, including checking assumptions, interpreting results, and documenting conclusions.
• Ability to translate complex simulation outputs into clear engineering decisions and communicate with technical and non-technical stakeholders.
• Ability to identify design risks proactively and propose practical mitigation strategies.
• Effective collaboration across mechanical, systems, and project engineering disciplines.
• Strong ownership of analysis quality, traceability, accuracy, and design evidence.
• Detail-oriented application of sound engineering fundamentals and standards.

Nice to have

• Professional experience with structural, thermal, dynamic, and fluid-system analysis.
• Proficiency with ANSYS, Abaqus, COMSOL, or equivalent FEA tools, including simulation validation and documentation.
• Experience with 3D CAD tools, preferably Autodesk Inventor, and connecting analysis outputs to 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, prototype build and commissioning support, verification planning, and engineering documentation in experimental or multidisciplinary environments.

Culture & Benefits

• Full-time role in an early, growing company focused on clean energy, scientific discovery, and innovative technology.
• Collaborative international environment with scientists, engineers, and professionals working across multiple geographies.
• 30 vacation days per year and support for work-life balance.
• Stock options, private pension support with 20% employer financing on monthly contributions, and loyalty incentives.
• Company-provided laptop and accessories, office snacks and drinks, and a canteen at the Darmstadt office.
• Regular team events, NAVIT mobility support, and Wellhub access to gyms, fitness studios, and wellness services across Europe.