GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt operates one of the leading particle accelerators for science. Currently, the new FAIR (Facility for Antiproton and Ion Research) one of the world's largest research projects, will be built in international cooperation. GSI and FAIR offer the opportunity to work in this international environment with a team of employees committed to ensuring each day to conduct world-class science.

The Hot and Dense QCD matter department is one of the three theory departments at GSI focused on dynamical modelling of heavy-ion reactions. The other two theory departments are Hadron Physics and QCD as well as Nuclear Astrophysics and Structure.

The Hot and Dense QCD matter department is looking for a

Research Software engineer for Theory (all genders)

Posting ID: 26.63-1820

to support all three theory departments at GSI with their numerical tasks. The successful candidate is expected to support the theory groups for scientific computing leading to a more efficient usage of high-performance computing facilities. The selected person will (in the long-term) enable scientific developments and provide advice for fulfilment of open science regulations.

Your tasks:

• Assist with open-source software and its maintenance
• Support with employment of HPC clusters by building containers, adapting submission scripts,
• Adapting software to new hardware requirements and proposal writing for cluster usage
• Porting of software and run setups to novel architectures; modernization of existing software
• Optimization of critical parts of calculations
• Implementation of novel algorithms
• Support with data analysis and scientific visualization

Your profile:

The successful candidate should have experience with computing for physics applications. In particular the following points are required:

• Doctoral degree (PhD) in physics or a MSc in mathematics, computational science or engineering
• Strong background in HPC and scientific computing and strong interest in numerical algorithms and parallelization strategies
• Experience with porting and optimization of parallel HPC software for modern architectures including GPUs
• Excellent knowledge of a variety of suitable computing languages (including C++ and Fortran)
• Excellent proficiency in scripting and unix shell languages (e.g. Python and bash)
• Proficient with tools for software development like git, gitlab/github, including continuous integration, unit tests
• Experience with parallelization using MPI and openMP combined with slurm
• Ability to work independently and systematically on different tasks at the same time
• Communication skills (oral and written)
• Ability to work in a team and didactic competence

We offer:

The contract is unlimited. The salary is based on the collective agreement for public employees (TVöD). 

GSI supports the vocational development of women. Therefore, women are especially encouraged to apply for the position. Handicapped persons will be preferentially considered when equally qualified.

Futher information about FAIR and GSI is available at www.gsi.de and www.fair-center.eu. For further information please contact Prof. Dr. Hannah Elfner (h.elfner(at)gsi.de).

Applications should include:

• a Curriculum Vitae
• proof of computing expertise for physics applications
• a written statement how the position could be envisioned7

If you are interested in working in an exceptional international, highly technical environment, please send your complete application documents and details of your earliest possible starting date, quoting the Posting-ID 26.63-1820 by 21.05.2026 at the latest via our online portal:

Online-Bewerbungsportal

GSI Helmholtzzentrum für Schwerionenforschung GmbH

ABTEILUNG PERSONAL

PLANCKSTRAßE 1

64291 DARMSTADT

Apply Now!