Senior Mechanical Engineer - Pulser Modules

Location not specified

Full Time

Posted March 6, 2026

$138k - $264k

Application opens on company website

Source: greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed September 29, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
Pay provenance: Employer-provided pay

Pacific Fusion is seeking an exceptional Senior Mechanical Engineer to help create the path to commercial fusion energy.

Develop innovative mechanical designs for complex engineering problems across our fusion systems, from vacuum vessels and structural assemblies to diagnostics hardware and experimental fixtures.
Lead design changes and improvements, owning components from concept through fabrication and test.
Work closely with vendors and manufacturers to ensure designs are practical, cost-effective, and manufacturable.
Perform mechanical analysis — including stress, thermal, and dynamic loading — to validate designs against requirements.
Conduct and participate in design reviews, providing critical feedback to improve system performance and reliability.
Coordinate with multidisciplinary teams spanning plasma physics, pulsed power, electrical, software, and manufacturing engineering to deliver integrated system-level designs.
Oversee the creation of detailed design documentation, drawings, and specifications.
Participate in risk assessments and develop mitigation strategies for novel engineering challenges.
Stay current with relevant advancements in mechanical design, materials, and manufacturing technologies.

Bachelor's degree in Mechanical Engineering required; Master's or PhD is a plus.
5+ years of experience as a Mechanical Engineer, ideally with exposure to complex, multi-disciplinary systems.
Proficiency in CAD software (Creo, SolidWorks, or equivalent) and strong 3D modeling habits.
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 — comfortable with rapid iteration and ambiguity.
Excellent written and verbal communication skills, including the ability to communicate trade-offs clearly across disciplines.

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
Actual base salary offered will be determined by: experience, skills, and work location. This range is for base salary, our total compensation includes equity and benefits. We welcome you to apply even if your expectations are outside our listed range.