Summer 2027 Internship- Mechanical Engineering

Pacific Fusion · Internships

Pay: $30–$48/hr
Where: San Leandro, CA/Fremont, CA or Los Lunas, NM
Posted: Sep 9

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.

What you'd do

Junior or Senior standing in a 4-year Mechanical Engineering program
Strong foundation in mechanical engineering fundamentals and first principles
Clear, confident written and verbal communication skills
Working knowledge of stress analysis (hand calcs and FEA), 2D drawings, and design for manufacturing and assembly
Experience using 2D and 3D CAD tools such as Creo or SolidWorks
Able to work full time, onsite for a minimum of 12 consecutive weeks beginning in Mid May- Mid June 2027

What you get

Meaningful, resume-building engineering work on real hardware
A chance to design, build, and test real systems
Mentorship from experienced engineers in a high-impact environment
Exposure to the full product lifecycle—from concept and design to build, test, and operation
A collaborative, hands-on, learning-driven culture
Daily catered lunch and unlimited snacks
An unforgettable summer working on systems that truly matter!