Scientific Programmer for High-Performance Computing
Deutsches Klimarechenzentrum (German Climate Computing Centre)

Title Scientific Programmer (m/f/d) - High-Performance Computing
Employer DKRZ - Deutsches Klimarechenzentrum
Job location Bundesstraße 45a, D-20146 Hamburg
Published July 24, 2019
Application deadline September 1, 2019
Job types Researcher, Research assistant, PhD, Other
Fields Informatics, Information Science, Computing in Mathematics, Natural Science, Engineering and Medicine, Information Systems (Business Informatics), Operating Systems, Parallel Computing, Programming Languages, Software Engineering, Software Design and 7 more.


The German Climate Computing Centre (DKRZ) is the central computing facility for the German climate and Earth System Modelling community. DKRZ operates one of the largest topic specific data and archive systems worldwide as well as supercomputers in the highest performance class, modern high-performance clusters and graphics systems. To improve the infrastructure for climate modelling, DKRZ participates in many national and international projects.

As part of the national climate modelling initiative PalMod ( with the aim of a better understanding of climate dynamics during the last glacial cycle, the DKRZ works in the field of software development and model optimization. For this we are looking for further team members.

Scientific Programmer (m/f/d)
High-Performance Computing

Your duties:
Together with the colleagues in the PalMod project you work on optimizing the used climate models. The focus here is on the efficient use of complex coupled Earth System Models, with which a transient simulation of more than 100,000 years is planned. Key factors in achieving this goal are:

Optimal use of SIMD-vectorisation and further hardware specific adaptation for HPC systems
Development and implementation of asynchronous execution of model and infrastructure components to increase the parallelism in coupled Earth System Models
Improved load-balancing between the individual model components

Your profile:
A university degree in Computer Science, Applied Mathematics, Computational Physics/Engineering or related fields
Expert programming knowledge (preferably in FORTRAN)
Solid knowledge in parallel programming with MPI and OpenMP
High experience in use of HPC systems
In addition to the professional aptitude, we expect initiative and willingness to learn.

You can expect an exciting project in the field of climate research, interdisciplinary cooperation with other research institutions in Germany, and a challenging task at the interface between HPC and applied science.

This position is advertised subject to the final approval of the funding agency; it is limited to 3 years, with the possibility of extension in the third phase of the PalMod project. The salary will be according to your personal qualification based on the German regulations for the Civil Service (TVöD). Further enquiries can be addressed to Dr. Hendryk Bockelmann (

The call is open until the position is filled. The review of applications will commence on September 1st, 2019. Applicants should submit their informative application containing a letter of motivation, detailed CV, and supporting material, with the reference DKRZ18 to:

Deutsches Klimarechenzentrum GmbH

Personalverwaltung, Bundesstraße 45a, 20146 Hamburg

or via email (as pdf file) to

If you apply for this position please say you saw it on Computeroxy


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