Founded in 2019, Marvel Fusion is Europe’s leading fusion energy company, uniting 120 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

The impact you will make

As a key contributor at the forefront of high-power laser fusion science, you will play a pivotal role in shaping the future of laser technology, driving innovations that redefine energy generation. Collaborating with multidisciplinary teams and leading experts worldwide, your work will directly influence cutting‑edge fusion concepts. This is a hands‑on opportunity to grow in a dynamic, multinational environment while making a lasting impact on sustainable energy.

Your responsibilities

Build, operate and stabilize the frequency‑comb front end — set up, run, lock and maintain the comb source in the lab.
Build, stabilize and characterize cavities — assemble, align, lock and optimize the reference and enhancement cavities.
Carry out the hands‑on lab work of the subsystem — alignment, troubleshooting, measurement and optimization, working independently.
Work with the multidisciplinary team to integrate your subsystem with the amplification, synthesis and other advanced technologies into the overall system design.
Utilize common laser diagnostic and nonlinear techniques to measure and analyze ultrafast pulses.
Document experimental procedures, results, and design recommendations in a structured and traceable manner
Contribute to the continuous improvement of the laser system, diagnostics and workflows.
Contribute to laser‑operation procedures and safety protocols and ensure compliance with safety standards.

What you bring

Master's degree or PhD in Physics, Optical Engineering, Laser Engineering, Photonics, or a related field.
Experimental expertise across ultrafast‑laser sources — diode‑pumped solid‑state, short‑pulse and fiber lasers and amplifiers — and their diagnostics.
Practical experience with optical alignment, laser operation, and laboratory troubleshooting.
Hands‑on experience in optical frequency combs and their stabilization
Hands‑on experience with high‑finesse optical cavities — alignment, locking, mode‑matching, and finesse/loss optimization
Practical experience with locking electronics and feedback/servo loops
Programming and data‑analysis skills (e.g. Python) for measurement automation and analysis.
Strong analytical and problem‑solving skills with a structured approach to technical challenges
A hands‑on, self‑driven and collaborative working style — you enjoy digging into complex problems with attention to detail in a dynamic, multidisciplinary team.
Excellent written and verbal communication skills in English

What we offer

Our mission is motivation enough for many. But we also support our team with benefits that foster wellbeing and growth:

Public Transport Subsidy
Employee Incentive Program
Wellpass or Complimentary Private Health Insurance
Professional Learning & Development Budget
Relocation Support
Company Pension Plan
30 Days of Vacation plus additional half day on 24. & 31.Dec.
Modern Office in the center of Munich
Healthy office snacks
Regular Team Events

For more information on how we process your application data, please review our privacy notice .

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Marvel Fusion Inc.