Seeking a Postdoctoral Researcher (25-680) Full-time

Postdoctoral Researcher

The RIKEN Center for Computational Science (R-CCS) is seeking a postdoctoral researcher. The successful applicant should engage on the following topics, working cooperatively with other groups in the below-mentioned Transformative Research Area.

• Development and tuning of simulation programs for quantum few-body to many-body systems and related algorithms. In addition to targeting CPU machines, it includes tuning and development for GPU machines.
• Development of a unified platform that covers several simulation programs for quantum few-body to many-body systems.
• Research on quantum matter science based on quantum few-body to many-body systems.

These are from the plan in A03 group “Building a Unified Platform for Finite Quantum Many-Body Computations” (Representative: Issaku Kanamori (RIKEN)) in the Grant-in-Aid for Transformative Research Areas A “Quantum Matter Science in the Universe Opened Up by Precise Numerical Calculations” (Representative: Emiko Hiyama (Tohoku Univ.), 2025 Apr.-2030 Mar.).

The job description may be changed during the contract period or upon contract renewal to the extent described above.

A person who is able to dedicate themselves to the job by communicating, coordinating and collaborating smoothly with people in and out of the laboratory. A PhD holder in a field of physics or related area (including those who expect to obtain a doctoral degree before starting the position) and within 5 years after obtaining the doctoral degree. Applicants with experience of parallel computing with C/C++ or Fortran and being familiar with Python are welcome to apply.

RIKEN Kobe Campus – South (7-1-26, Minatojima-minamimachi, Chuo-ku, Kobe, 650-0047, JAPAN) RIKEN may order the employee to change work locations, if necessary.

A one-year fixed-term employment contract, renewable based on evaluation, but not beyond the end of March, 2030. Salary will be an annual salary based on experience, ability, and performance, and will consist of a base salary and a variable salary. The monthly base salary is 327,200 JPY for Postdoctoral Researcher. The monthly base salary and variable salary are subject to change due to amendments to RIKEN regulations. Discretionary work, commuting and housing allowances will be provided. Social insurance will be applied. The approximate amount of annual salary at the time of employment: The monthly salary including discretionary work allowance at the time of employment will be more than 400,000 JPY.

RIKEN has implemented a telecommuting system that allows employees to work from home or other locations permitted by RIKEN.

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. Paid leave includes annual paid leave (up to 20 days per year depending on the month of employment), special paid leave (childcare, family nursing care, etc.), and work-life balance holidays (up to 7 days per year depending on the month of employment). There are also additional leave systems such as maternity leave, childcare leave, and family nursing care leave. Smoking is entirely prohibited on site. These and other provisions are in accordance with RIKEN regulations.

Mandatory membership in the RIKEN Mutual Benefit Society (RIKEN Kyosaikai).

The Kobe Campus has an on-site daycare. For details, please send an email to the General Administrative Section at kobe-kosei@riken.jp.

RIKEN is actively undertaking initiatives to promote gender equality and diversity, and moving forward with the establishment of a diverse and vibrant research environment. If multiple candidates are found to have the same aptitude following a fair assessment, active efforts will be made to recruit female candidates.

Eligible for an exemption from repayment for category 1 scholarship loans provided by the Japan Student Services Organization before fiscal year 2003. Eligible to apply for the MEXT Grants-in-Aid for Scientific Research (Kakenhi).

Application and Required Documents

Please prepare the following documents in English. Only recommendation letters may be either in English or in Japanese.

• CV or CV
• List of research achievements (including ResearcherID or Google Scholar ID, if available)
• Copies of up to five most important publications
• List of competitive funds acquired, awards received, and other achievements including, contributions to university/institution operations, contribution to society through activities in academic societies, joint research projects, technology transfers, etc.
• 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.
• Recommendation letters from one or two persons who can evaluate your work
• Consent form for handling personal information based on GDPR

How to Apply

Combine the above documents except the recommendation letters into a single PDF file and upload them to the following link:

Applications for R-CCS Field Theory Research Team

The file name of the PDF should contain the job ad number “25-680, R-CCS Field Theory Research Team” and the applicant's name. Please write the job ad number and 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@riken.jp) 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. Recommendation letters must be directly submitted from the referees to the link mentioned above with the subject line “Recommendation letter for [applicant's name], [name of the position], R-CCS Field Theory Research Team”. Please tell them to email us (kobe-jobs@riken.jp) that they have uploaded the PDF file and to specify the applicant's name, referee's name and contact information in the body of the email. If a confirmation email is not received within 7 days after submission, please contact: kobe-jobs@riken.jp.

Note: None of the submitted documents will be returned.

Deadline

Applications will be accepted until the positions are filled (The selection process will start after July 25, 2025).

Handling Personal Data

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

Selection Process

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

Notification of Hiring Decision

The notification of hiring decision (conditional offer of employment) regarding this selection shall be carried out through the presentation of an Employment Contract or a Conditional Offer of Employment issued by RIKEN.

Start of Employment

October 1, 2025 or later (subject to negotiation)

Contact Information

For inquiries on research conducted by the team, please contact the corresponding research scientist by email:

Issaku Kanamori Field Theory Research Team RIKEN Center for Computational Science Email: kanamori-i@riken.jp