Infrastructure Mechanical Engineer

Posted 4/28/2026 · last confirmed live 8/26/2026

About Pacific Fusion Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy. We are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems. Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand. You can read more about us in  this letter from our founders . Why This Role Matters As the Infrastructure Mechanical Engineer, you will be responsible for overseeing the integration of mechanical building system requirements for our nuclear fusion demonstration system. You will work across several teams to develop the building systems which enables us to achieve net facility gain. During construction you will work with design consulting engineering and contractors to ensure a quality installation which can be safely maintained. Following construction, you will be responsible for the operation, maintenance, and future upgrades of the building systems. This position is based in Albuquerque, NM and will require up to 50% travel to our San Leandro, CA facility during the design and permitting process.   What You'll Do Develop facility mechanical equipment requirements and guidelines for building systems including HVAC, fire protection, plumbing, and other infrastructure systems. Assist in the design and development of utility systems including pneumatic, fluid, and vacuum systems. Interface with engineers, scientists, and technicians to obtain facility mechanical inputs. Work with the Infrastructure Design Team to ensure building mechanical systems are documented and designed appropriately for permitting design, construction, commissioning, and operations. Develop building systems commissioning, maintenance, and operations plans. What You Bring Minimum BS, Mechanical Engineering Minimum 7+ years of experience working in design, construction, facility operations, and commissioning for industrial, manufacturing, or research facilities Experience with HVAC, process piping, fire sprinkler, and plumbing systems Hands on experience with industrial, manufacturing, or research facility commissioning and operations Strong multidisciplinary program management skills and ability to work diligently across cross functional teams Proactive, doer, and self starter mindset Cooperative and positive attitude which influences your peers to be the best versions of themselves Track record of reliability and ability to drive results Bonus Points For PE license Experience working in a startup Experience working in industries such as: fusion, energy, aerospace, chemical Pay Range: $116,000 — $174,000 USD Total Compensation & Benefits for Eligible Employees 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. Pacific Fusion is committed to creating a diverse environment and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. Pacific Fusion is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures and throughout employment. If you need assistance or any accommodation, please let us know. Pacific Fusion does not accept unsolicited resumes from recruiters or employment agencies without a fully executed recruitment agreement in place. In the absence of such agreement, Pacific Fusion reserves the right to pursue and hire any candidates without an obligation to pay fees. Agencies are requested not to contact Pacific Fusion hiring managers or employees regarding recruiting services.

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