The German Climate Computing Centre (DKRZ) is the central simulation and data processing facility for the German climate and Earth system modelling community and one of the leading institutions in this field worldwide. DKRZ not only operates supercomputers of the highest performance class and one of the largest data and archive systems, but also participates in many national and international projects aimed at improving the software and infrastructure for climate modelling. Here we are offering a position as

**Software Engineer **(all genders)**
with a focus on development workflows**

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**Your tasks**

DKRZ is heavily involved in the development of ICON and in its transition towards more open, collaborative, and transparent development workflows. In this context, you will help shape and improve the software development environment around ICON, with a focus on making day-to-day development, testing, review, and integration processes more efficient and accessible.

Your work will center on GitLab-based development workflows for ICON, including automation, CI/CD, merge request processes, and developer feedback mechanisms. You will explore and prototype practical ways to support ICON developers with AI-assisted tooling, for example for initial code reviews, CI feedback, test result interpretation, documentation support, or guidance during development.

A further focus will be the improvement of ICON’s CI infrastructure, including the use of Jacamar and container-based execution environments. You will contribute to more reproducible, maintainable, and user-friendly build and test workflows that support both established ICON developers and new contributors.

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**Qualifications / Experiences**

* Academic degree in computer science, applied mathematics, computational physics/engineering, or a related field with a clear focus on scientific computing
* Interest in applying AI-assisted tools to software development, testing, review, and automation
* Experience with scientific software development, especially with code development workflows of shared open-source projects
* Experience with software development workflows in GitLab, including merge requests, code review, and CI/CD, ideally including designing these
* Practical knowledge of container-based development, build, and test environments
* Familiarity with CI runners, preferably including Jacamar or similar HPC-oriented runner setups
* Programming experience under Unix/Linux, including scripting languages such as Python or Bash, experience with HPC environments and programming is an advantage
* Motivation to support open, collaborative, and community-oriented software development
* Very good communication skills and knowledge of English

**Employment conditions**

We offer work in interdisciplinary teams and excellent connections to national and international research networks. In addition to specific implementation and support requirements from our users and project partners, your work will be characterised by the freedom to work creatively at the interface between applied computer science and the development of tools for scientific applications. Participation in international conferences, project meetings and hackathons enables further training and presentation of your own results wherever meaningful.

We are based in Hamburg, but want to create a suitable working environment by offering flexible working hours and location (up to 100% work from home within Germany). Remuneration will be based on the candidate's qualifications according to TVöD-Bund. You can ideally start already in July 2026, but the exact starting date can be agreed individually. The position is financed by third-party funded projects and is initially limited until March 2028.

Interested applicants are requested to compile a single pdf document containing a cover letter, a detailed CV and any additional documents (e.g. professional references). Applications must be submitted via the portal https://dkrz.softgarden.io/en/vacancies.

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**Application deadline**: Open until filled. Priority will be given to applications received by 12 July 2026.

Questions? Dr. Jan Frederik Engels (engels@dkrz.de) and Dr. Hendryk Bockelmann (bockelmann@dkrz.de) will be happy to answer them in advance.