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Pacific Fusion

Modular pulsed-fusion energy system

Fabrication Lead - Vacuum Systems

Welding & Metal FabricationConfirmed live in the last 24 hours
Full-timeSan Leandro, CA, USA

About the Job

Requirements

  • A bachelor's degree in mechanical engineering, physics, or a related technical field is required.
  • At least 8 years of experience with high- or ultra-high-vacuum systems, including design, fabrication, and installation, is required.
  • A deep understanding of vacuum fabrication, including welding, surface finish, sealing, cleanliness, and leak-detection techniques such as helium leak testing, is required.
  • Experience with stainless-steel fabrication processes and cleanliness standards for vacuum service is required.
  • Familiarity with vacuum-system assembly, testing, and troubleshooting is required.
  • Experience with aerospace-grade fabrication of large, complex stainless-steel assemblies with intricate machined features, tight tolerances, and smooth surface finish is required.

Responsibilities

  • Own execution of vacuum-vessel and component fabrication, from design for manufacturability through final site installation.
  • Drive requests for quotation and technical bid reviews for complex vacuum components and large precision-manufactured components, ensuring tight-tolerance and cleanliness standards.
  • Manage fabrication of mission-critical vacuum components and power-flow components for the fusion machine.
  • Build detailed execution plans, including vacuum leak testing, qualification, and turnover documentation.
  • Coordinate with vacuum physicists and design engineers to optimize system performance and reliability.
  • Manage suppliers of specialized vacuum hardware and precision-machined components, ensuring schedule compliance and quality control; travel to meet with suppliers.

Desired Qualifications

  • Experience with large-scale ultra-high-vacuum systems for fusion, aerospace, or accelerator physics.
  • Experience machining aerospace-grade complex and large assemblies.
  • Hands-on experience with cleanroom practices and assembly.
  • Familiarity with nonconformance resolution in vacuum hardware.

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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