Seeking a Postdoctoral Researcher or Contract Researcher(W725)

Research field and overview

RI applications team performs following researches at RIKEN RI Beam Factory (RIBF):

  1. Research and development of RI production technology at RIBF
  2. RI application researches
  3. Development of trace element and isotope analyses and their applications to geoscience and environmental science
  4. Development of chemical materials for ECR ion sources of heavy-ion accelerators in RIBF

Job title, available positions and job description

Job title, available positions

One opening for Postdoctoral Researcher or Contract Researcher
Postdoctoral Researcher is defined as those who obtained a doctoral degree less than 5 years ago.
Contract Researcher is defined as those who obtained a doctoral degree more than 5 years ago.

Job description

Postdoctoral researcher or Contract Researcher who is expected to develop RI production technologies at RIKEN RI Beam Factory (RIBF) and to conduct RI application studies in nuclear and radiochemistry. The postdoctoral researcher or the contract researcher is also expected to engage in operation and maintenance of laboratory equipment and to support co-workers.


The candidate should possess a doctoral degree or will be able to obtain a doctoral degree before the work start date. The successful candidate is expected to conduct works actively and steadily under the smooth cooperation with persons involved from inside/outside of RIKEN. Research experience in nuclear and radiochemistry is required.

Work location

Branch and address
RIKEN Wako (2-1 Hirosawa, Wako, Saitama 351-0198)

Salary and benefits

  1. A one-year fixed-term employment contract, renewable based on evaluation, to a maximum of the end of the fiscal year 2021 (March 31, 2022).
  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).
  4. Depending on the review of the Employee’s research results on its third year, the employment contract may not be renewed beyond the third year.

The salary system is annual and will be commensurate with qualifications and experience. Commuting and housing allowances will be provided. Social insurance will apply. Mandatory membership in the RIKEN Mutual Benefit Society (RIKEN Kyosaikai) is required.
Days off include public holidays, New year’s holidays (Dec. 29 – Jan. 3), and RIKEN Foundation Day.
These and other provisions are in accordance with RIKEN regulations.

*RIKEN promotes a Gender Equity Program by taking various measures to create an equitable workplace where both men and women are able to give full rein to their talents and abilities. When the abilities of candidates are judged to be equivalent through a fair and impartial evaluation process, preference will be given to females.
*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 for applying for MEXT Grants-in-Aid for Scientific Research (Kakenhi)

Application and required documents

Required documents

  1. Complete CV (with photo and email address) WORD EXCEL
    Write down in the notes section of your CV the number written next to the title of the job position (W725).
  2. List of research achievements and publications
  3. A letter of recommendation including one from the current supervisor
    (If the current supervisor’s recommendation is not available, a recommendation letter from a third party will be accepted)
  4. Summary of major achievements to date and research proposal in future (each one page A4 sized paper)

How to apply

Send the PDF formatted application by email to haba[at]
Note: Application documents will not be returned.


December 31, 2017

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.

Selection process

Application screening and interview for selected applicants

Start employment

April 1, 2018 (Negotiable)

Contact information/Send application to

RI Applications Team
RIKEN Nishina Center for Accelerator-Based Science
2-1 Hirosawa, Wako, Saitama 351-0198
Email: haba[at] (Replace [at] with @ )
For inquiries, please send an email.