1. Home
  2. Careers
  3. Job Openings

Seeking Postdoctral Researchers (W23321)


Advanced Laser Processing Research Team
RIKEN Center for Advanced Photonics
(Team Leader: Koji Sugioka)

Research Field

Our research team aims at research and development of advanced laser processing which realizes low environmental load, high quality, high efficiency, high resolution fabrication of materials. Specifically, by using ultrafast lasers, novel material processing that cannot be achieved by the other conventional techniques is developed. The techniques to be developed include three-dimensional micro/nanofabrication, high aspect ratio machining, surface nanostructuring, and synthesis of new materials, which are applied for fabrication of biochips, ultrahigh sensitive sensors, and high function photonic and electronic microdevices.

Job title and Job description

Job title, available positions

Postdoctoral Researcher, 2 positions

Postdoctoral Researcher is defined as those has had a doctoral degree for less than 5 years.

Job description

Photo-fabrication of biomaterials for tissue engineering (3D cell culture) or for micro physiological system (MPS) using MEMS (micro electro mechanical systems). Biomaterials synthesis for cell culture, bioreactors, and biosensors.

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 in a related field and research experience using synthesis of biomaterials, cell engineering, and biochemical methods.

Work location

RIKEN Center for Advanced Photonics (2-1 Hirosawa, Wako, Saitama 351-0198)

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.A one-year fixed-term employment contract, renewable of employment based on evaluation, up to March 31, 2027.
  • 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.
  • 3.When the center to which the Employee is affiliated is scheduled for a final review in FY 2024 and it is decided that the Employee's research will not be continued, the provision given above for projects of limited duration applies and the Employee's contract will not be renewed for the FY 2025 year that would extend employment beyond the center's final fiscal year.

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 300,000 JPY as of April 1, 2024. 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 will be 337,185 JPY or more.

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.

The Wako Campus has an on-site daycare, RIKEN Kids Wako. For details, please send an email to the HR at kids [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 or PDF file should be sent to Dr. Sugioka (ksugioka [at] riken.jp).
The file name of the ZIP or PDF should contain your name.

For Postdoctoral/Research Scientist position, Advanced Laser Processing Research Team, Center for Advanced Photonics, RIKEN

Note: All the submitted documents will not be returned.

Recommendation letters must be directly submitted from the referees to Dr. Sugioka (ksugioka [at] riken.jp) with the file name "Advanced Laser Processing Research Team, position name [applicant’s name] (Recommendation letter)". Please specify the applicant's name, referee's name and contact information in the recommendation letter.

Note: All the submitted documents will not be returned.

If a confirmation email is not received within 7 days after submission, please contact: the e-mail address at contact information below.


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 at RIKEN. 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 of Employment

As early as possible.

Contact Information

Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics
Email: ksugioka [at] riken.jp
For inquiries, please send an email.