Seeking a few Postdoctoral Researchers (25-3174) Part-time

Postdoctoral Researchers

RIKEN Center for Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) is an international research center at RIKEN. It facilitates close collaborations among researchers from different disciplines in theoretical, mathematical and computational sciences. The ultimate goal of iTHEMS is to unravel the mystery of the Universe, matter, and life, as well as to solve key problems in modern society through interdisciplinary approaches.

Division of Fundamental Mathematical Science conducts mathematical basic research through interdisciplinary initiatives centered on mathematics (mathematics, materials, life, space, computing, and information).

For more information, please refer to the following website: RIKEN Center for Interdisciplinary Theoretical and Mathematical Science (iTHEMS)

This call for applications is for a few Postdoctoral Researchers in string theory, machine learning, quantum gravity, quantum field theory. The successful candidate will work with Yuta Hamada, the principal investigator of the JST BOOST project “New Developments in Superstring Theory as Data Science” at the iTHEMS Division of Fundamental Mathematical Science.

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

The candidate should possess a doctoral degree or be expected to obtain a doctoral degree by the date of hire.

Work location: RIKEN Wako Campus (2-1 Hirosawa, Wako, Saitama 351-0198) RIKEN may order the employee to change work locations, if necessary.

Salary and benefits: A one-year fixed-term employment contract, renewable based on evaluation, up to March 31, 2031. Salary will be an annual salary based on experience, ability, and performance, and will consist of a base salary and a variable salary. The variable salary will be determined each fiscal year based on experience, ability, and performance. Discretionary work, commuting and housing allowances will be provided. Social insurance will be applied. The total amount of monthly discretionary work allowance and monthly salary at the time of hiring will be 480,000 JPY or more. RIKEN has implemented a telecommuting system that allows employees to work from home or other locations permitted by RIKEN. 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 depending on the month of employment), special paid leave (caring for a sick child, family nursing care, etc.), and work life balance holidays (up to 7 days 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).

Eligible to apply for the MEXT Grants-in-Aid for Scientific Research (Kakenhi).

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.

The Wako Campus has an on-site daycare, RIKEN Kids Wako. For details, please send an email to kids@riken.jp.

Application documents should be uploaded through Academic Jobs Online. Note: All the submitted documents will not be returned.

Open until the position is filled. We will first select the application documents that have arrived by April 30, 2026 (JST).

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.

Application screening and interview for selected applicants.

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.

As early as possible.

Updated as of May 29, 2026: “Required documents.”

Contact Information: Division of Fundamental Mathematical Science, RIKEN Center for Interdisciplinary Theoretical and Mathematical Sciences Email: ithems_saiyou@ml.riken.jp For inquiries, please send an email.