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Marathon Fusion · 2 months ago

Physics Modelling internship (Summer 2026+)

San Francisco

Internship

Onsite

Intern

$27.88/hr - $40.87/hr

Start in 2026 Summer

Marathon Fusion is a startup focused on developing fusion energy technologies. They are seeking a Physics Modelling Intern to create and use computational models to simulate physical phenomena in their core technologies, particularly in plasma dynamics and experimental apparatus design.

Mechanical Or Industrial Engineering

Responsibilities

Model Implementation: Implementing new or optimizing existing computational models for plasma and mechanical systems

Simulation and Analysis: Executing simulations and analyzing data to provide insights into device performance and physical behavior

Cross-Functional Collaboration: Working closely with experimental and mechanical teams to validate models against real-world data and inform design decisions

Qualification

Computational modelingPlasma dynamicsSimulation analysisMechanical engineeringVacuum systemsHolistic thinkingConscientiousnessExperimental mindsetCommunicationQuick learningProject management

Required

Studying physics, but have meaningful hands on experience including in fabrication, mechanical engineering, test engineering, vacuum systems operation, or similar

Studying mechanical engineering, but have had meaningful exposure to physics through coursework, internships, projects or personal study

Studying a combination of both in an engineering physics program, double major or similar

Studying an engineering field or other technical field and have exceptional work-ethic, eagerness to learn, and autonomy

Excellent written and oral communication

Ability to think holistically about systems

Capacity to learn new technical subjects quickly, collaborate cross-functionally, and consider problems from inter-disciplinary perspectives

Organization and project management

A high degree of conscientiousness and integrity

Long-term vision while executing short-term goals

Comfort with the inherent uncertainty of breakthrough technology

Experimental mindset, ability to form and test hypotheses