Internship - Software Engineering (f/m/x)

Marvelfusion

Munich permanent

Posted: May 8, 2026

Required Skills

Job Description

Who we are

Founded in 2019, Marvel Fusion is Europe’s leading fusion energy company, uniting 75 scientists, engineers, and entrepreneurs across our locations in Munich and Colorado.

Backed by over €385 million in public and private funding, we’re driven by a shared mission: to deliver clean, abundant energy to the world.

Why Marvel Fusion

By joining us, you will be:

• Solving one of the most complex technological challenges known to humanity, harnessing Fusion on Earth

• Part of a highly purpose-driven team working on providing the world with clean, safe and abundant energy

• Working alongside world-leading scientists and entrepreneurs in the field of Fusion

• Part of a start-up where growth on a company and individual level is the default

Your responsibilities

• Build and ship real software that is used in production, not toy projects

• Work across our stack on data pipelines, simulation tools, internal tooling or control systems depending on where the biggest need is

• Collaborate directly with scientists and engineers to understand requirements and translate them into robust solutions

• Contribute to code reviews, documentation and improving engineering standards

• Identify inefficiencies in existing systems and propose and implement improvements

What you bring

• Currently enrolled in a top university in Computer Science, Software Engineering, Physics, Mathematics or a related technical discipline

• Strong programming fundamentals, we do not care much about which language, we care that you think outside the box

• Experience building real things outside of coursework, open source, side projects, hackathons, anything that shows you ship

• Comfortable working in ambiguous environments where the problem is not always fully defined

• Fast learner who asks smart questions and does not wait to be told what to do

• Fluent in English

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