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Pacific Fusion

Modular pulsed-fusion energy system

Mechanical Engineer Intern

Design EngineeringConfirmed live in the last 24 hours
Internship · Summer 2027

About the Job

Requirements

  • Junior or senior standing in a four-year Mechanical Engineering program.
  • A strong foundation in mechanical engineering fundamentals and first principles.
  • Clear, confident written and verbal communication skills.
  • Working knowledge of stress analysis, including hand calculations and finite element analysis, 2D drawings, and design for manufacturing and assembly.
  • Experience using 2D and 3D computer-aided design tools such as Creo or SolidWorks.
  • Ability to work full time onsite for at least 12 consecutive weeks, beginning between mid-May and mid-June 2027.

Responsibilities

  • Own a project through planning, design, assembly, and testing phases of development.
  • Work on meaningful projects across the target area engineering team.

Desired Qualifications

  • Hands-on mechanical design experience through coursework, clubs, research, or personal projects.
  • Experience with conventional machining, shop tools, and rapid prototyping.
  • Experience defining system architectures and making design tradeoffs against requirements.
  • Experience writing build instructions, procedures, or test plans.
  • Strong measurement, documentation, and data analysis skills.
  • Curiosity, humility, and a desire to teach and learn.
  • Ability to design, build, and operate test stands and experimental hardware.
  • Experience or strong interest in kinematics, structures, or robotics.
  • Six or more months of prior internship, co-op, or substantial project experience.
  • A grade point average of 3.5 or higher.
  • Experience with computer-aided design, MATLAB, Python, or Excel.

About the Company

Pacific Fusion

Modular pulsed-fusion energy system

Pacific Fusion works to develop commercially viable nuclear fusion energy. It uses pulsed magnetic inertial fusion to squeeze and heat small deuterium-tritium fuel capsules with fast, high-current pulses inside a compact fusion chamber, aiming to achieve net energy gain where the output exceeds the input. The system is highly modular: a fast electric pulser built from thousands of identical parts, a small fusion chamber, and many tiny fuel containers, enabling affordable manufacturing, rapid iteration, and simpler supply chains. This focus on practical economics helps distinguish it from competitors that may pursue less manufacturable designs. The company’s goal is to deliver limitless, clean, on-demand power to meet growing global energy demand and help address climate change.

Company size
201-500
Company stage
Series A
Total funding
$900M
Headquarters
Fremont, CA
Founded
2023

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