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Pacific Fusion

Modular pulsed-fusion energy system

Senior Mechanical Engineer - Test Infrastructure

Design EngineeringConfirmed live in the last 24 hours
Full-timeSan Leandro, CA, USAIn-person

About the Job

Requirements

  • A Bachelor's degree in Mechanical Engineering is required; a Master's or PhD is a plus.
  • At least 5 years of hands-on experience in mechanical design and structural or thermal analysis for complex hardware systems.
  • Advanced proficiency in 3D CAD modeling software such as Creo or SolidWorks.
  • Practical experience applying finite element analysis software such as ANSYS, Abaqus, or Creo Simulate to evaluate stress, fatigue, thermal effects, and structural integrity.
  • Understanding of GD&T (ASME Y14.5), tolerance stack-up analysis, and material selection for demanding environments.
  • Knowledge of advanced manufacturing techniques, including machining, additive manufacturing, and precision welding, and DFM/DFA principles.
  • Written and verbal communication skills and a track record of cross-functional technical leadership.

Responsibilities

  • Lead end-to-end mechanical design, 3D CAD modeling, and detail engineering of complex high-performance components and assemblies.
  • Perform hand calculations, first-principles mechanical design, and advanced finite element analysis.
  • Translate high-level physics requirements, spatial constraints, and boundary conditions into robust engineering models and hardware specifications.
  • Conduct detailed tolerance stack-up analyses and impact assessments on part variances to ensure strict design interface requirements are met.
  • Apply Design for Manufacturability (DFM) and Design for Assembly (DFA) practices to optimize performance, weight, cost, and lead times.
  • Interface with physics, system integration, and manufacturing teams to resolve complex design trade-offs and mitigate technical risk.
  • Prepare and maintain engineering documentation, including fully dimensioned detail drawings (GD&T) and design review packages.

About the Company

Pacific Fusion

Modular pulsed-fusion energy system

Pacific Fusion works to develop commercially viable nuclear fusion energy. It uses pulsed magnetic inertial fusion to squeeze and heat small deuterium-tritium fuel capsules with fast, high-current pulses inside a compact fusion chamber, aiming to achieve net energy gain where the output exceeds the input. The system is highly modular: a fast electric pulser built from thousands of identical parts, a small fusion chamber, and many tiny fuel containers, enabling affordable manufacturing, rapid iteration, and simpler supply chains. This focus on practical economics helps distinguish it from competitors that may pursue less manufacturable designs. The company’s goal is to deliver limitless, clean, on-demand power to meet growing global energy demand and help address climate change.

Company size
201-500
Company stage
Series A
Total funding
$900M
Headquarters
Fremont, CA
Founded
2023

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