Join a startup on the way up — not a bet, not a giant.

Pacific Fusion is seeking a Senior Mechanical Engineer to lead the design, development, and validation of mechanical components for advanced fusion energy systems. The role requires expertise in CAD, FEA/CFD, and DFM, with 6+ years of experience. This is a full-time position based in San Leandro, CA.

Senior Manufacturing Engineer at Pacific Fusion, responsible for owning end-to-end manufacturing processes for pulser module assembly, working on the shop floor to bring fusion hardware to life, and driving continuous improvement.

Pacific Fusion is seeking a Facilities Technician to support engineering and operations by installing and maintaining facility infrastructure, troubleshooting equipment, and assisting with test stand builds. The role involves hands-on work with electrical, mechanical, and manufacturing systems, with about 25% of time supporting electro-mechanical technicians.

Pacific Fusion is seeking a Senior Buyer to support sourcing and delivery of components for its inertial fusion demonstration system. The role involves negotiating with suppliers, managing performance, and implementing procurement strategies to meet business objectives.

Pacific Fusion is seeking a Senior Full Stack Developer to architect and develop data acquisition systems and web front ends for our pulser-driven inertial fusion system. You will design databases, APIs, and React applications to manage and present data for the pulser factory and Demonstration System.

Pacific Fusion is seeking a Head of Logistics & Inventory to own the flow of material across the company, from supplier dock to production line to installation site. This role will build and run logistics and inventory operations across San Leandro, CA and New Mexico sites, ensuring material availability never gates the build.

Pacific Fusion is seeking a Senior Mechanical Engineer to design, analyze, and validate mechanical systems for an advanced fusion energy platform. The role involves leading projects, mentoring junior engineers, and working on precision instrumentation, vacuum systems, and thermal management. Requires 5+ years of experience in mechanical design with CAD and FEA tools.

Pacific Fusion is seeking a Senior Mechanical Engineer to help design, analyze, and validate mechanical systems for its fusion energy platform. The role involves leading design projects, mentoring junior engineers, and collaborating with multidisciplinary teams. Requires 5+ years of experience and proficiency in CAD and FEA.

Pacific Fusion is seeking a Senior Structures Engineer to design, analyze, and validate critical mechanical and structural systems for its inertial fusion energy systems. The role involves structural analysis, mechanical design, and construction engineering, with a focus on high-precision installation and operations.

Pacific Fusion is seeking a Senior Manufacturing Engineer to lead the build center for its nuclear fusion demonstration system, bridging design and production by developing mechanical design improvements, tooling, and assembly solutions. The role involves working with manufacturing and facilities teams to resolve mechanical issues, enhance throughput and quality, and maintain process documentation.

Pacific Fusion is seeking an Infrastructure Mechanical Engineer to oversee integration of mechanical building systems for a nuclear fusion demonstration system. The role involves developing facility mechanical equipment requirements, working with design consultants and contractors, and managing operations and maintenance. Based in Albuquerque, NM with up to 50% travel to San Leandro, CA.

Pacific Fusion is seeking a Controller to lead all accounting and financial operations, including monthly close, financial reporting, and team management. The role involves building and optimizing processes to support the company's mission of providing clean energy.

Pacific Fusion is seeking a Senior Accountant to manage accounting activities including monthly close, journal entries, reconciliations, and audits, while supporting the mission to provide clean fusion energy. The role involves building and optimizing financial processes and enabling engineers and scientists as they bring the demonstration system online.

Pacific Fusion is seeking a Controls Hardware Engineer to design and implement control systems for a pulser-driven inertial fusion system. The role involves requirements definition, control system design, PLC programming, and compliance with safety standards. Requires 5+ years of experience in industrial automation.

Pacific Fusion is hiring a Mechanical Design Engineer to design, develop, and validate mechanical components for advanced fusion energy systems, focusing on vacuum seals. The role involves leading experimental design, performing FMEA and tolerance analysis, and mentoring junior engineers.

Pacific Fusion is seeking a Senior Project Engineer to lead procurement, fabrication, and installation of structural steel systems for its fusion energy program. This role manages suppliers, coordinates cross-functional teams, and ensures turnkey delivery of critical equipment structures.

Pacific Fusion is seeking a Senior Mechanical Engineer to design, build, and operate pulsed power systems for its inertial fusion platform. The role involves hands-on work with high-voltage systems, controls, diagnostics, and data analysis, requiring 5+ years of experience.

Pacific Fusion is seeking a Facilities Engineer to lead the integration of complex mechanical and electrical systems for its fusion demonstration system. Based in Albuquerque, NM, this role manages design consultants, supports construction and commissioning, and requires up to 50% travel to San Leandro, CA during the first year.

Pacific Fusion seeks Senior Mechanical Design Specialists to develop advanced mechanical systems for fusion energy, using Creo Parametric and Windchill, with strong CAD expertise and design leadership.