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Seeking a Postdoctoral Researcher (IMS209-2302)


Laboratory for Retrotransposon Dynamics
RIKEN Center for Integrative Medical Sciences
(Team Leader: Tomoichiro Miyoshi)

Research Field

Our laboratory focuses on mammalian retrotransposon biology associated with genomic alteration, immune responses, and epigenomic regulation. Through the analysis of omics data including proteomics, genomics and transcriptome analysis, we conduct basic science on retrotransposon-mediated immune responses, aging regulation and genomic alterations, or the development of new technologies to regulate these processes.

Job title and Job description

Job title

One opening for Postdoctoral Researcher

Job description

The successful candidate will engage in research for aging regulation, immune responses, and genomic alteration using retrotransposon-related omics data.

The difference in positions is as follows:

  • *Postdoctoral Researcher: Carries out research and other work in accordance with laboratory research themes under the mentorship and training of supervisors.


  • The candidate should possess sufficient research experience in mammalian retrotransposons, or abilities in genome sequencing, transcriptome, or proteomics analysis.
  • The candidate should also abilities to communicate efficiently with collaborators inside and outside the team to promote collaborative research.
  • A doctoral degree awarded less than 3 years ago in a field related to the [Job Description].

Work location

RIKEN Center for Integrative Medical Sciences
1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa 230-0045 Japan

RIKEN has implemented a work-from-home system. Employees can work from home in accordance with the prescribed procedures.

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 (March 31) in which the employee completes 3 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.In principle, the Center's operation period will end as of March 31, 2025. If the project is discontinued after March 31, 2025, the period of your contract may be subject to change at the time of its renewal.

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 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:

Postdoctoral Researcher:
For a candidate who joins RIKEN immediately after finishing their PhD, the annual pay at hire (including the Discretionary Work Allowance) will be approximately 4.3 million yen/year.

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 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.

The Yokohama Campus has an on-site daycare, RIKEN Kids Yokohama. For details, please send an email to the HR at kids-yk-hr [at] ml.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.

*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

Required documents

Prepare the documents below as PDF files and follow the instructions in [How to Apply] to submit them. Incomplete applications will not be considered.

  • 1.CV or CV with photograph and e-mail address (Also indicate the desired position (Postdoctoral Researcher) and the open call ID [IMS209-2302] in the upper right corner of the CV.)
    • *Using the RIKEN format above is appreciated.
  • 2.List of publications (articles, reviews and books), presentations, etc. in the past 5 years.
  • 3.Brief description of previous research and achievements, and future research plans (maximum of two A4-size pages).
  • 4.Recommendation Letter (1)
    • -The signature (or seal) of the person providing the recommendation is required. In the case of a scanned or digital signature or a recommendation sent by email, the contact information for that person must be included.
    • -If it is difficult to obtain a recommendation letter from the current supervisor, a recommendation from a third party will be accepted. The letter of recommendation should be addressed to the “Director of the Center for Integrative Medical Sciences.”
    • -The person providing the recommendation is required to upload his /her the letter to the URL “IMS Submission Box” stated below.
  • 5.PhD/ master’s degree diploma
  • 6.List of competitive external funds obtained (e.g., Grants-in-Aid for Scientific Research [Kakenhi]; indicate whether you are the representative researcher or the collaborator)
  • 7.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

How to Apply

The above documents except the recommendation letter should be converted to PDF and uploaded to the following website after these files are combined into a single ZIP file:

RIKEN/IMS Application Box

  • Zip file name: IMS209-2302_Position Title_Applicant’s name
  • The file name of each PDF file: IMS209-2302_Position Title_Applicant’s name_submitted document No.


*When you upload your application documents by a ZIP file via BOX, please make sure to input your contact email address.

Recommendation letters must be directly submitted from the referees to the following website with the subject line "IMS209-2302_[applicant’s name] ". Please specify the applicant's name, referee's name and contact information in the recommendation letter. Also, the referees need to input own contact email address when they upload their recommendation letters to the below link. Please request your referees to confirm their recommendation letters are addressed to “Director of the Center for Integrative Medical Sciences” before uploading.

RIKEN/IMS Submission Box

The file name of each PDF file: IMS209-2302_Applicant’s name

  • Note1: All the submitted documents will not be returned.
  • Note2: Only shortlisted candidate will be contacted via email after document screening.


Until the position is filled

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

Selection will be made based on application screening and interviews (Face-to-Face or Remote)

Note: RIKEN will not cover interview travel expenses.

Start of Employment

April 1, 2024 (negotiable)

Contact Information

Recruiting staff for RIKEN Center for Integrative Medical Sciences
Administrative Division, RIKEN Yokohama Branch
Email: IMS-recruit [at] riken.jp
For inquiries, please send an email.

Inquiries for research matter,
RIKEN Center for Integrative Medical Sciences
Laboratory for Retrotransposon Dynamics
Team Leader: Tomoichiro Miyoshi
tomoichiro.miyoshi [at] riken.jp
Please contact us by email.