Senior Mechanical Engineer

The role

You will design, analyze, integrate, and validate mechanical systems and components for an advanced fusion energy platform. This includes developing designs for vacuum vessels, structural assemblies, diagnostics hardware, and experimental fixtures.

What you will do

• Develop innovative mechanical designs for complex engineering problems.
• Lead design changes and improvements from concept through fabrication and test.
• Work with vendors and manufacturers to ensure practical and manufacturable designs.
• Perform mechanical analysis including stress, thermal, and dynamic loading.
• Conduct and participate in design reviews.
• Coordinate with multidisciplinary teams to deliver integrated system-level designs.
• Oversee the creation of detailed design documentation, drawings, and specifications.
• Participate in risk assessments and develop mitigation strategies.
• Stay current with advancements in mechanical design, materials, and manufacturing technologies.

Required qualifications

• Bachelor's degree in Mechanical Engineering
• 5+ years of experience as a Mechanical Engineer
• Proficiency in CAD software (Creo, SolidWorks, or equivalent)
• Experience with Finite Element Analysis (FEA) for structural, thermal, or dynamic applications
• Proven track record of taking mechanical designs from concept through fabrication and test
• Strong understanding of manufacturing processes and design for manufacturability (DFM)
• Excellent leadership skills with the ability to mentor and guide junior engineers
• Hands-on experience in laboratory or prototype environments
• Excellent written and verbal communication skills

Nice to have

• Master's or PhD
• Experience in fusion, plasma physics, accelerator physics, defense, or other high-consequence technical environments
• Familiarity with vacuum systems, cryogenics, high-voltage hardware, or pulsed power components
• Exposure to large-scale structural systems, pressure vessels, or custom capital equipment

Benefits

• Industry-Competitive Salary
• Equity Plan
• 6% Employer 401k Matching
• Generous Paid Time Off (including sick leave, vacation, paid family leave)
• Medical, Dental, and Vision insurance

Before you apply

• This position may require access to information or technology subject to U.S. export control laws.
• Access is provided only to individuals classified as U.S. Persons (U.S. citizens, U.S. nationals, lawful permanent residents, asylees and refugees with such status granted, not pending).

About the company

Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy. The company is designing and building a pulser-driven inertial fusion system.