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Neutronics Engineer

Join Proxima Fusion as a Neutronics Engineer to advance stellarator design and contribute to the future of clean energy.

Location
Munich
Compensation
Not disclosed
Level
mid
Type
full time

Posted by employer 9 months ago

First seen on Joblaze 1 month ago

Last verified on the company career page 12 hours ago

Apply at Proxima Fusion → Save job Scanned from proximafusion.com

Skills & Technologies

Requirements

Experience
0+ years
Education
Master's degree

Not disclosed in this posting: compensation, work arrangement, visa sponsorship.

Joblaze summary

In the role of Neutronics Engineer at Proxima Fusion, the individual will focus on conducting neutronics analysis to support the design and safety of the Alpha stellarator, utilizing advanced simulation tools. Key skills include proficiency in Python and experience with neutronics codes like OpenMC and DAGMC, along with a background in nuclear physics or engineering. This position is well-suited for candidates with a PhD or Master's degree and a strong foundation in nuclear data processing and simulation. Proxima Fusion's collaborative environment offers a unique opportunity to contribute to groundbreaking clean energy technology.

Joblaze insights

  • Listed about a month ago — first seen on Joblaze September 3, 2026. Last confirmed on Proxima Fusion's careers page October 29, 2026.
  • Python appears in 23.8% of 80 comparable mid other roles in Germany; C++ appears in 7.5% of 80 comparable mid other roles in Germany.

Quick facts

How much experience is required?
At least 0 years of relevant experience for this Neutronics Engineer role.
What's the tech stack?
Joblaze extracted these technologies from the posting: C++, CadQuery, DAGMC, Gmsh, OpenMC, Python.
What seniority level is this role?
Proxima Fusion targets mid-level candidates for this position.
Is this full-time or contract?
Full-time for this Neutronics Engineer role at Proxima Fusion.

From the original posting

 
 

BY JOINING OUR TEAM YOU’LL GET TO

  • Shape the architecture of the world’s first commercial fusion power plant – Own system-level decisions that determine how a first-of-a-kind energy technology is designed, integrated, and ultimately deployed at scale.

  • Solve some of the most complex engineering challenges – Work across tightly coupled disciplines (plasma physics, magnets, cryogenics, manufacturing, controls, and more) to resolve critical trade-offs and turn cutting-edge science into a functioning product.

  • Design real hardware with a pragmatic, fast-moving team from all over the world – Combine advanced simulation and systems thinking with a strong execution mindset, focusing on practical engineering solutions that accelerate the path to commercial fusion energy.

YOUR IMPACT

As a member of the neutronics group you will play a critical role in advancing our stellarator design.

Your work will focus on analysis required for licensing and operational safety of the Alpha stellarator.

You will carry out reproducible neutronics simulations and automate neutronics simulation workflows. Simulations include producing shutdown dose rate maps, unstructured mesh magnet heating, tritium breeding, DPA, activation, using both CSG and CAD-based neutronics models.

The role provides a unique opportunity to work as part of an integrated design effort including machine learning experts, software engineers, fusion scientists, and fusion engineers, making a tangible impact on the future of clean energy.

WHAT YOU WILL DO

  • Perform neutronics analysis using OpenMC and DAGMC for a range of neutron and photon responses important for stellarator optimization and design.

  • Contribute to the integration of neutronics analysis into automated pipelines, including programming in Python (essential skill), using version control (Git/Graphite) within a Docker environment, Programming in C++ is considered a benefit.

  • Perform verification and validation by comparing simulation results obtained with OpenMC to other codes and experimental data.

  • Construct simulation ready CAD with CadQuery and CSG geometries of the stellarator and surrounding facility.

  • In addition to developing in-house neutronics workflows, you may have opportunities to contribute to open-source codes we depend on for nuclear data processing, CAD conversion / meshing, and particle transport simulations.

WHO YOU ARE

  • A PhD or Master’s degree in nuclear physics, nuclear engineering, or equivalent experience.

  • Experience in processing nuclear data.

  • Experience with the main codes that we use (OpenMC, DAGMC, CadQuery, Gmsh) for neutronics analysis.

  • Experience designing neutron and gamma shielding.

  • Experienced Python programmer using software development tools such as Git

  • Experience with computation in cloud or HPC environments involving numerical simulations (desirable).

INTERVIEW PROCESS

  • Recruiter Interview (30-60 min)

  • Technical Screening (30 min)

  • Technical Panel (3x60 min)

  • CEO call (30 min)

This role sits at L2/L3 of our framework, please inquire during the recruitment process for further information*

Standard company text repeated across Proxima Fusion's postings is omitted here.

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