Staff Modeling and Simulation Engineer (Fusion Energy)

Location: Milpitas, CA, United States; On-site

Salary: $166,000–$240,000 per year, plus equity and benefits.

Company

hirify.global develops commercially viable fusion power plants and next-generation fusion hardware.

What you will do

• Lead advanced Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) for advanced processing equipment.
• Build, run, and evaluate coupled multi-physics simulations covering structural mechanics, high-temperature thermal management, fluid and gas flow, and chemical reaction kinetics.
• Implement simulation data management workflows, mesh convergence criteria, and verification and validation protocols using physical test data.
• Provide analytical leadership in design reviews by evaluating structural margins, thermal stress distributions, and flow uniformity.
• Collaborate with mechanical designers, electrical engineers, materials scientists, and chemical specialists to translate simulation results into hardware modifications.
• Own modeling milestones, timelines, computational resources, stakeholder reporting, and mentoring of junior engineering staff.

Requirements

• Master’s or PhD degree in Mechanical Engineering, Aerospace Engineering, Physics, or a related field focused on computational mechanics and multi-physics modeling.
• 10+ years of experience in simulation and predictive analysis of complex R&D systems.
• Advanced hands-on expertise with ANSYS, COMSOL Multiphysics, or equivalent high-end FEA/CFD platforms.
• Proven experience running coupled simulations, including fluid-structure interaction, thermal-structural behavior, and chemical reaction modeling.
• Ability to validate simulation results against physical test metrics such as strain-gauge data, thermal imaging, and flow sensors.
• Demonstrated ability to influence hardware design through analytical data and lead cross-functional initiatives in a matrixed environment.
• Ability to lift up to 25 lbs occasionally and perform stooping, climbing, standing, and extended periods of sitting.
• Willingness to travel or occasionally work nights, weekends, or on-call shifts.
• Dedication to safety when working around industrial hazards including heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics.

Nice to have

• Familiarity with industry codes for simulation-driven design validation.
• Experience with transient dynamic simulations or precision motion systems in extreme thermal environments.

Culture & Benefits

• Fast-paced environment focused on integrity, execution, impact, self-critique, and diverse perspectives.
• Equity and competitive compensation.
• 13 company-wide holidays, flexible vacation days, and 10 sick days.
• Generous parental leave and health, dental, and vision insurance.
• 401(k) with employer matching, professional growth opportunities, and team-building activities.