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Seeking a Postdoctoral Researcher (CPR-HBS2201)


Human biomimetic system RIKEN Hakubi Research Team
RIKEN Cluster for Pioneering Research
(Laboratory head: Masaya Hagiwara)

Research Field

The overall objective of my research is the development of in-vitro experimental platform to reconstitute the biological system outside our bodies by controlling cellular micro-environments. Factors to provide cells with spatio-temporal information such as cell distribution, ECM localization, morphogen gradients will be controlled to reconstitute in vivo environments and functional organ architecture.

Job title and Job description

Job title, available positions

Postdoctoral Researcher: 1 position
Postdoctoral Researcher is defined as those with a doctoral degree of 5 years or less.

Job description

Research related to the organoid development such as lung, spinal chord, and kidney and control organoid architecture by providing spatial information to the cells. It is essential to design the suitable culture conditions based on development in vivo, reconstitute environment with engineering technologies to give orientation, and analyze the cellular composition and functions of developed organoids.


Those with a Ph.D. degree in a field broadly related to the "job description" and who can communicate smoothly and cooperatively with collaborators inside and outside the laboratory.

Work location

Branch and address

RIKEN Center for Biosystems Dynamics Research (Kobe Campus-East-West)
6-7-1 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047 (Integrated Innovation Building)

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 March 31, 2026.
  • 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.

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 295100 JPY as of April 1, 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 approximate amount of monthly salary at the time of employment:

The monthly salary including discretionary work allowance at the time of employment for a candidate with 1 years of experience, ability, and achievement after completion of the doctoral course will be approximately 330,000-400,000 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.
No smoking on site.
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).

The Kobe Branch has an on-site daycare, RIKEN Kids kobe. For details, please send an email to the HR at kobe-kosei [at] riken.jp.

Application and required documents

Required documents

  • 1.Complete CV or CV (with photo and email address)
    • *Write the RIKEN job ad number “CPR-HBS2201”, indicated in the parentheses next to the job title, in the RIKEN job ad number section in the upper right corner of your CV.
  • 2.List of research achievement and publications
  • 3.A letter of recommendation from the current supervisor (If unavailable, a letter from a substitute reference will be acceptable.)
    Please specify the referee’s contact information (Name, affiliation, job title, phone number, and email address)
  • 4.Statement of purpose and brief description of the current research
  • 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

How to apply

The above documents except the recommendation letters combined into a single ZIP file should be uploaded to the following website:
For Postdoctoral researhcer position, Human Biomimetic System RIKEN Hakubi Research Team, Cluster of Pioneering Research, RIKEN

The file name of the ZIP should contain your name.
After you uploaded the ZIP file, please let us (masaya.hagiwara [at] riken.jp) know the file name of the uploaded file.

Recommendation letters must be directly submitted from the referees to the URL above with the file name "Human Biomimetic System RIKEN Hakubi Research Team Postdoctoral Researcher [applicant’s name] (Recommendation letter)". Please specify the applicant's name, referee's name and contact information in the recommendation letter.

After the referees uploaded the recommendation letter, please let us (masaya.hagiwara [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: masaya.hagiwara [at] riken.jp

Note: All the submitted documents will not be returned.


Open 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

Application screening, interview and oral presentation by selected applicants

Start of Employment

June 1, 2023, as early as possible (Negotiable)

Contact Information

RIKEN Cluster of Pioneering Research
Human Biomimetic System RIKEN Hakubi Research Team
Email: masaya.hagiwara [at] riken.jp
For inquiries, please send an email.


  • Updated as of Mar 16, 2023: "RIKEN job ad number", "Work location", "Salary and benefits" and "Contact Information"
  • Updated as of May. 24, 2023: "Work location" and "Salary and benefits"