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Seeking a Research Scientist or Postdoctoral Researcher (H24-002)


Life Science Research Infrastructure Group
Advanced Photon Technology Division
RIKEN SPring-8 Center
(Group Director: Nobutaka Shimizu)

Research Field

Our group is dedicated to advancing the frontiers of structural life sciences and drug discovery through the utilization of cutting-edge facilities, including the large synchrotron radiation facility SPring-8, the X-ray free-electron laser (XFEL) facility SACLA, and state-of-the-art cryo-electron microscopy. We oversee the operation of these sophisticated facilities, ensuring their availability for public scientific research, while also spearheading efforts to enhance their capabilities and infrastructure. Our primary objective is the development of advanced measurement and analysis techniques for X-ray crystallography and small-angle X-ray scattering, leveraging the unparalleled brightness of synchrotron radiation and XFEL sources. Furthermore, we are actively engaged in pioneering research on single-particle structure analysis using cryo-electron microscopy. In tandem, we are also dedicated to establishing and refining conducive measurement environments for soft material science research using small-angle X-ray scattering, as well as developing new devices and measurement techniques.

Job title and Job description

Job Title

Research Scientist or Postdoctoral Researcher: 1 position

In principle, those who have completed their doctoral degree within 5 years will be appointed as Research Scientist, and those who have completed more than 5 years will be appointed as Postdoctoral Researcher.

Job description

This position is in charge of research and development of new instruments and measurement analysis techniques for structure-property correlation analysis using small-angle X-ray scattering over a wide spatio-temporal scale, aiming at further development of polymer chemistry and soft materials science research. In addition, the group will promote structure-property relationship studies of target materials in collaboration with researchers inside and outside the group, utilizing those instruments and techniques.

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 complete a doctoral degree by the date of appointment due to research in a related field, e.g., polymer chemistry. Experience with small-angle X-ray scattering beamlines at domestic or foreign synchrotron radiation facilities is desirable.

Work location

RIKEN SPring-8 Center (1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148)

RIKEN has implemented a work-from-home system. Employees can work from home in accordance with the prescribed procedures.
RIKEN may order the employee to change work locations, if necessary.

Salary and benefits

  • 1. One-year fixed-term employment contract, renewable based on evaluation, up to maximum 7 years.
    For the postdoctoral researcher position, however, the maximum term allowed at RSC is 5 years.
  • 2. RIKEN may adjust the above maximum period of renewability based on a) the employee’s abilities, workload 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 70 years.

In principle, the first two months of employment is considered a trial period.
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. The monthly base salary is 361,000 JPY as of April 1, 2024 for Research Scientist, 305,100 JPY for Postdoctoral Researcher JPY. 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 405,760 JPY for Research Scientist, 342,915 JPY for Postdoctoral Researcher JPY.
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.
Paid leave includes annual paid leave (up to 20 days depending on the month of employment), special paid leave (childcare, 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 will be entirely prohibited on site from April 2024.
These and other provisions are in accordance with RIKEN regulations.

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.

  • *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).
  • *RIKEN has a work-from-home system, but this position requires attendance at the work location. Therefore, the work-from-home system is not available for this position. For more information, please get in touch with the hiring staff at nobutaka.shimizu.uj [at] riken.jp.

Application and required documents

Required documents

How to apply

The above documents except the recommendation letters combined into a single ZIP file should be uploaded to the following link:

Application file for Research Scientist or Postdoctoral Researcher position (H24-002)

The file name of the ZIP should contain your contact email address.
After you uploaded the ZIP file, please let us (nobutaka.shimizu.uj [at] riken.jp) know the file name of the uploaded file.

Recommendation letter must be directly submitted from the referee to the following link with the subject line"
LifeScienceResearchInfrastructureGroup_AdvancedPhotonTechnologyDivision_RIKENSPring-8Center_[ResearchScientist or PostdoctoralResearcher]_RecommendationLetter". Please specify the applicant's name, referee's name and contact information in the recommendation letter.

Recommendation letter for Research Scientist or Postdoctoral Researcher position (H24-002)

After the referee uploaded the recommendation letter, please let us (nobutaka.shimizu.uj [at] riken.jp) know the file name of the uploaded file.
If a confirmation email is not received within 7 days after submission, please contact: nobutaka.shimizu.uj [at] riken.jp.

Note: All the submitted documents will not be returned.


Until the position is filled (The screening process will start as the applications are received.)

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

Selection will be made based on application screening and interviews.

Start of Employment


Contact Information

Life Science Research Infrastructure Group
Advanced Photon Technology Division
RIKEN SPring-8 Center
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Email: nobutaka.shimizu.uj [at] riken.jp
For inquiries, please send an email.