Seeking a few Research Scientists or Postdoctoral Researchers (C22-0103)
SACLA Beam Line Research and Development Group
Advanced Photon Technology Division
RIKEN SPring-8 Center
(Team Leader: Kenji Tamasaku)
Theory Team explores theoretically new phenomena of X-ray free electron laser by actively incorporating ideas and method from different research fields.
Job title and Job description
Research Scientist or Postdoctoral Researcher: a few positions
Theoretical research on X-ray optics, condensed matter physics, or other research fields related to the potential use of SACLA. The successful candidate will promote scientific research with a broad perspective on various phenomena of synchrotron radiation in collaboration with experimentalists.
Job Qualifications: The candidate should possess or expect to receive a doctoral degree in a related field before the appointment date. (Candidates with less than five years postdoctoral experience will be considered for the position of Postdoctoral Researcher.)
Branch and address
RIKEN SPring-8 Center
(1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148)
Salary and benefits
The following rules do not apply if the appointment is to begin on or after April 1, 2023, in accordance with the open recruitment procedure by RIKEN after October 17, 2022.
"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)."
- 1. A one-year fixed-term employment contract, renewable based on evaluation, to a maximum of the end of the fiscal year (March 31) in which the employee completes 7 years of employment.
- 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 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).
In principle, the first two months of employment are 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 295,100JPY for Postdoctoral Researcher and 350,300JPY for Research Scientist, as of April 1st 2023. 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 monthly salary including discretionary work allowance at the time of employment will be more than 331,000 JPY for Postdoctoral Researcher and 393,000 JPY for Research Scientist.
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.
You may be asked to work from home according to the instructions of the institute. You can also choose to work from home with the permission of your supervisor.
Smoking is not permitted on site except in designated smoking areas. 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).
Application and required documents
Please send the following documents to the email address given below:
- 1.Complete CV (with photo and email address)
- 2.List of research achievement and publications (reviewed papers, presentations, etc.)
- 3.Outline of previous research and aspiration for research after arrival (A4, two pages)
- 4.Letter of recommendation (including one from the current supervisor, If available)
- *These letters of recommendation should be signed or sealed by the recommender.
- *The letters should be addressed to "Tetsuya Ishikawa, Director of RIKEN SPring-8 Center".
- *If the current supervisor’s recommendation is not available, a recommendation letter from a third party will be accepted
- 5.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 position is filled (The screening process will start as the applications are received.)
Handling Personal Data
All private data sent to RIKEN in application for employment is handled in strict confidentiality, and such data is not utilized for any other purpose or disclosed to any third party. Application documents will not be returned.
Selection will be made based on application screening and interviews.
Start of Employment
Contact Information / Send application to
Send application materials (PDF format) to Email: rscsc [at] spring8.or.jp
The Email title should be: (C22-0103) Application for Theory Team,”
(Team Leader: Dr. Kenji Tamasaku)
*If you have any research-related questions, please contact rscsc [at] spring8.or.jp