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Seeking a Postdoctoral Researcher (R-CCS2028)


Computational Molecular Science Research Team
RIKEN Center for Computational Science
(Team Leader: Takahito Nakajima)

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 primary target of our project is to develop our-own theoretical and computational molecular theory in order to perform first-principle calculations for the large-size and complicated molecular systems including nano- and bio-materials. The project involves the novel development of theory, algorithm, and software, which will be realized by cooperation of computational science and computer science with the supercomputer Fugaku. By using our-own developing theory and software, in addition, we will realize a variety of untraversed computational applications for theoretical molecular designs as well as theoretical clarifications of chemical reactions and properties. We wish to construct a new foundation of computational science throughout our project.

Job title and Job description

Available positions

Postdoctoral Researcher

Job Description

  • 1.Development of ab initio quantum chemistry software "NTChem"
  • 2.Computational designs for novel materials such as Pb-Free perovskite solar cells via high-throughput simulation and materials informatics on the supercomputer Fugaku
  • 3.Development of new molecular electronic structure theory with fully utilization of high-performance supercomputers


The position requires a Ph.D. (including those who will take a degree before arriving at the post. If it has been 5 years or less since your acquisition of Ph.D. degree, you will be employed as a Postdoctoral Fellow), or equivalent/higher abilities. Communication in English is required.
Background(s): Quantum chemistry, Theoretical chemistry, Condensed matter physics, Theoretical biochemistry, Machine learning, Materials informatics

Work location

RIKEN Center for Computational Science, 6-7-1, Minatojima-minami-machi, Chuo-ku, Kobe, 650-0047, JAPAN

Salary and benefits

  • 1.One-year fixed-term employment contract, renewable based on evaluation, up to 5 years since the initial date of hire.
  • 2.RIKEN may adjust the above maximum period of renewability based on a) the employee's abilities, work load at the time of contract completion, performance and work attitude and b) the continuation of the employee's center, laboratory or project and RIKEN's management situation and budget at the time. In principle, employment contracts will not be renewed for individuals older than 65 years
  • 3.The employee's period of fixed-term employment cannot exceed 10 years from the initial date of hire (or 10 years from April 1, 2013 for fixed-term employees already at RIKEN prior to this date).

In principle, the first two months of employment is considered a trial period.
Salary will be commensurate with qualifications and experience. Commuting and housing allowances will be provided. Social insurance will be applied. Mandatory membership in the RIKEN Mutual Benefit Society (RIKEN Kyosaikai).
This position falls under the specialized duties discretionary work system; one working day will be calculated as 7 hours and 30 minutes.
Days off include public holidays, New Year's holidays (Dec. 29 - Jan 3), and RIKEN Foundation Day.
RIKEN has introduced telework as a temporary and special measure to prevent the spread of COVID-19. You may be asked to work from home according to the instructions of the institute. You can also choose to work from home with the permission of your supervisor.
No smoking on site (designated smoking areas available).
These and other provisions are in accordance with RIKEN regulations.

RIKEN is promoting a Gender Equality Program by taking various measures to create a workplace where both men and women are able to give full rein to their talents and abilities.

Also, you will be eligible for an exemption from repayment for category 1 scholarship loans provided by the Japan Student Services Organization before fiscal year 2003, and eligible for applying for the Grants-in-Aid for Scientific Research (Kakenhi) of Japan.

Application and Required documents

Applications are accepted by email only. However, when the application documents are too large to submit by email, it is recommended to employ file transfer services on the internet. Before submitting the applications, make sure the documents are encrypted and send us the password information separately. Upon receipt, we will check whether all the required documents are included and send an acknowledgement of receipt. If you do not receive the acknowledgement email, please contact us at the email address in “Contact information” below.

  • 1.Curriculum Vitae or Curriculum Vitae. (with photo and email address)
  • 2.List of research achievements (publications, presentations, awards, software development/release projects you are involved in, etc.).
  • 3.Up to five reprints of selected research articles
  • 4.Your experience in that field, together with your research plan if employed (within 2 pages in A4 format)
  • 5.At least two letters of recommendation from a person who can evaluate your work. The letter should be addressed to the Director of RIKEN Center for Computational Science.
  • 6Consent form for handling personal information based on GDPR
    If you are a resident of the European Economic Area (EEA), you are required to submit the document, “Consent form for handling personal information based on GDPR” with your signature.
    *You will find detailed information about General Data Protection Regulation (GDPR) on the following website:
    Data protection | European Commission


Until the final candidate is found.

Handling of personal data

All private data sent to RIKEN in application for employment will be handled in strict confidentiality, and such data will not be utilized for any other purpose or disclosed to any third party. Application documents will not be returned.

Selection process

Those who pass the selection on the basis of the candidate's documents will be interviewed at R-CCS.

Start of employment

As early as possible (negotiable)

Contact information and Send application to

Combine all the application documents into a single PDF document and submit to the email address below.
Email: kobe-jobs [at] riken.jp

Please use the subject line “R-CCS Computational Molecular Science Research Team – Postdoctoral Researcher” when applying.

For inquiries on research conducted by the team, please contact the Team Leader by email:
Takahito Nakajima
Computational Molecular Research Team
RIKEN Center for Computational Science
Email: nakajima [at] riken.jp