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Data number
Date of publication
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Seeking a few Research Scientist or Postdoctoral Researcher (R-CCS2205) (Supercomputing Performance Research Team)
RIKEN(The Institute of Physical and Chemical Research)
URL of institution or department
Center for Computational Science
Institution type
National research institute / Independent administrative institute
Job posting URL
Content of job information

Supercomputing Performance Research Team
RIKEN Center for Computational Science
(Team Leader: Jens Domke)

[Research field]
RIKEN Center for Computational Science (R-CCS), led by Center Director Satoshi Matsuoka, is an international research center in high performance computing and computational science in Japan. Our objectives are to investigate “the Science of (high performance) computing, by computing, and for computing", to research and develop our technologies (R-CCS technology) and software (R-CCS software), which we consider our core competence, in order to produce world-leading scientific and engineering results for use in Japan as well as globally.

Also, R-CCS started operating Japan's national flagship supercomputer Fugaku, as a shared national facility to support a wide range of research activities since 2021.

The Supercomputing Performance Research Team conducts performance studies of traditional HPC architectures and software subsystems such as processors, networks, memory, accelerators, and storage; and the team investigates non-traditional hardware, such as neuromorphic chips, optical processors, and quantum computing devices to analyze their applicability to speed up supercomputing workloads. The team's mission is to improve the performance, efficiency, and usability of Fugaku and upcoming supercomputers by data-driven co-design.

[Job title and job descriptions]
Job title:
Research Scientist or Postdoctoral Researcher: A few positions

Job description:
The scientist will join a vibrant team and top-class HPC institute to collaborate with other computer science and domain science teams to conduct research on HPC performance, such as performance modeling, simulation, prediction, and monitoring, in order to enhance the community's understanding of cutting-edge and future supercomputers as well as applications running on these systems. Furthermore, the scientist will be in charge of benchmark design and preservation of existing benchmark suites to conduct short-term analysis of various systems and long-term tracking of performance trends.

The scientist will be able to research novel methods to automatically apply performance tuning and/or portability approaches to large-scale simulations running on Fugaku or other supercomputers, and will disseminate the research findings through scientific publications.

In addition to the above research and development, the scientist might take charge of various tasks in our research team and she/he could be involved in the R&D for the next generation of supercomputers for the RIKEN Center for Computational Science.

[Work location]
Branch and address:
RIKEN Center for Computational Science
6-3-5, Minatojima-minamimachi, Chuo-ku, Kobe, 650-0047, JAPAN

[Start of employment]
At the earliest opportunity (subject to negotiation)

Performance Modelling and Predictions
Hardware/Software Co-Design for HPC
Architecture and Application Evaluations
Instrumentation and Monitoring Tools
Auto-Tuning and Portability

Research field
All Informatics
Interdisciplinary science and engineering
All Interdisciplinary science and engineering
Job type
Researcher/Postdoc level
Employment status
Work location
Kinki district - Hyogo 

Applicants must have a doctoral degree or expect to receive a doctoral degree before the date of appointment. In general, those who earned a doctorate within the past 5 years will be appointed as Postdoctoral Researcher, and those who earned a doctorate more than 5 years ago will be appointed as Research Scientist.

Applicants should have:
・Experience in performance analysis, tuning, or modelling of hard- or software system;
・Knowledge of high performance computing systems; scalable, parallel architectures; and Linux operating system;
・Knowledge of typical high-level programming languages and parallelization paradigms used in the HPC field, e.g., C, C++, Fortran, CUDA, OpenMP, and MPI;
・Knowledge of one or more common scripting languages such a Bash, Python, etc.;
A high degree of self-motivation, a drive to learn new things, and a desire to solve complex “puzzles"; and
・Confidence in communicating in English, i.e., reading, writing and speaking.


For details about "Salary and benefits", please refer to the above "Job posting URL".

Application period
2023/07/04 Deadline for receipt
Applications will be accepted until the positions are filled.
/notification of result
/contact details

[Application and required documents]
Required documents:
Please refer to the above "Job posting URL" regarding the "Required documents".

How to apply:
Combine the above documents into a single PDF file and upload them to the website:
For the website, please refer to the above "Job posting URL".

The file name of the PDF should contain the job ad number “R-CCS2205, Supercomputing Performance Research Team" and the applicant's name. Please write the name of the position that you apply for in the “Add additional information" box.
After you uploaded the PDF file, please let us (kobe-jobs [at] know the file name of the uploaded file. When you send us an email, please write your name, Job Ad number and the name of the position that you apply for.

If the recommendation letter is directly submitted from the referees, please send it to (kobe-jobs [at] by attaching it to the email. Please write "R-CCS2205 Supercomputing Performance Research Team, [name of the position], [applicant's name] (Recommendation letter)" in the subject line and specify the applicant's name, referee's name and contact information in the email.

If a confirmation email is not received within 7 days after submission, please contact: kobe-jobs [at]

Note: Submitted documents will not be returned.

Applications will be accepted until the positions are filled.

[Selection process]
Applications will be reviewed upon receipt, and interviews will be conducted for selected applicants (2 interviews for Research Scientist position and one interview for Postdoctoral Researcher position.) No inquiries on the selection process and results will be answered.

[Contact Information]
For inquiries on research conducted by the team, please contact the Team Leader by email:
Jens Domke
Supercomputing Performance Research Team
RIKEN Center for Computational Science
Email: jens.domke [at]

Online Submission
Online Submission with all application documents is available.
JREC-IN Portal web application
Not available
Email Application
Not available
Recruiting Institution's
Web application system
Additional information

Handling Personal Data:
Submitted documents are strictly protected under the RIKEN Privacy Policy and will be used only for the purpose of applicant screening. Personal information will not be disclosed, transferred or loaned to a third party under any circumstances without just cause.

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