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Seeking Researchers (R-CCS2007)


Next Generation High Performance Architecture Research Team
RIKEN Center for Computational Science
(Team Leader: Masaaki Kondo)

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, the K computer, as a shared national facility to support a wide range of research activities in 2011. Following K's success, development work on its successor, Supercomputer Fugaku, was launched in April 2014.

For the purposes of enhancing utilization of the K supercomputer and the Fugaku supercomputer as well as advancing future parallel computing technologies, the Next Generation High Performance Architecture team is intended to tackle the following research agendas:

  • 1.Ultra high-bandwidth architecture based on novel technologies such as next generation non-volatile memory, stacked 3-D memory, as well as advanced optical interconnect
  • 2.Re-evaluation of non von Neumann architectures such as dataflow and systolic arrays based on latest advances in device technologies
  • 3.Acceleration of machine learning and neuromorphic computing as well as advancement of scientific simulations utilizing those technologies
  • 4.Next generation ultra power-efficient architectures based on the integration of various types of accelerators and general purpose processors
  • 5.Hybrid computing architectures that combine the benefits of quantum computing and classical computing
  • 6.Next generation ultra-fast optical interconnect and optical switches
  • 7.Detailed co-design evaluation of next generation architectures above as well as the algorithms taking advantage of them on the Fugaku

Job title and Job description

Available positions

Senior Scientist, Research Scientist or Postdoctoral Researcher


We are seeking for a few person who can engage in one or more of following three topics:

  • 1.Research and development of high-performance computer architectures, next generation architectures, and optical interconnect technologies
  • 2.Research and development of highly parallel algorithms and programing languages for next generation high-performance architectures
  • 3.Research on evaluation methodologies of high-performance architectures and algorithms


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 Researcher. Senior Scientist position is considered for those who have more than 5 years of work experience in a specialized field and ability to supervise other team members), or equivalent/higher abilities to accomplish the offered topics. The candidate also should have good experience computer programming using C, C++, or Fortran. It is preferable to have the experience of parallel programing/tuning using MPI or OpenMP as well as the experience of offered topics. Communication in English (or Japanese) is required.

Work location

RIKEN Center for Computational Science,
6-3-5, Minatojima-minamimachi, Chuo-ku, Kobe, 650-0047, JAPAN

Salary and benefits

  • 1.(Senior Scientist or Research Scientist) One-year fixed-term employment contract, renewable based on evaluation, up to seven years since the initial date of hire. We plan to evaluate in the sixth year. Depending on the evaluation results, there is a possibility that it will be extended beyond seven years.
  • 2.(Postdoctoral Researcher) One-year fixed-term employment contract, renewable based on evaluation, up to five years since the initial date of hire.
  • 3.RIKEN will decide whether to enter into a new contract on the basis of the employee's abilities, work load, performance, work attitude, continuation of the center, laboratory or project in which the employee is involved at the time of termination of the original contract, and on the basis of RIKEN's situation and budget conditions at the time. In principle, employment contracts will not be renewed for individuals older than 65 years.
  • 4.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).
These positions fall 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.
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. When applicants are judged to be equally qualified on the basis of fair and impartial criteria, women applicants will be given preference.

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

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.

Required documents

Please prepare the following documents in English.

  • 1.CV
    No format specified. Please make sure to include applicant's name, nationality, academic background, work history including the applicant's current affiliation, and email address. Other information that is not necessary for selection, such as the applicant's current address, the date of birth, age, sex and marital status, is not required.
  • 2.List of research achievements
    Include not only peer-reviewed papers but also awards and competitive funds received, achievements in research while working in the private sectors. Also include quantitative evaluation indexes such as the Google Scholar citation index as much as possible.
  • 3.Copies of up to five most important publications (Please mark the papers on the list of publications.)
    When the original publications are not in PDF format, scan the papers and save them as PDF documents prior to submission.
  • 4.Description of previous research, future research plans, and career goals: No format specified, approximately three to four A4 pages in total. It is desirable that a diagram describing the research is provided.
  • 5.Recommendation letter(s) (in English) from one or two individual(s) with their signatures
    One recommendation letter should be written by the applicant's current supervisor. When it is difficult to do so, a recommendation letter written by a third party may be accepted. The letter should be addressed to RIKEN R-CCS Director. Digital signature image should be embedded in the recommendation letters within the PDF file.
  • 6.Consent 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

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

Start of employment

At the earliest possible time (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 Next Generation High Performance Architecture Research Team - [Name of the posision]" when applying.

For inquiries on research conducted by the team, please contact the Team Leader by email:

Masaaki Kondo
Next Generation High Performance Architecture Research Team
RIKEN Center for Computational Science

Email: masaaki.kondo [at] riken.jp


Updated as of Mar 27, 2019: "Required documents"
Updated as of May 14, 2020: "Research Field"
Updated as of September 10, 2020: "Research Field"