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Seeking a Postdoctoral Researcher (W24036)


Materials Characterization Support Team,
RIKEN Center for Emergent Matter Science
(Laboratory head: Daisuke Hashizume)

Research Field

Our Team provides research support using X-ray crystal structure analysis, electron microscopy, and elemental analysis. In addition to supporting the individual method, we give multifaceted research support by combining these methods. We collaborate with researchers, not only we perform merely routine work, to achieve the purposes of their research and to provide new insights on the research through discussion based on the results. We also challenge to develop unexplored measurement methods aiming at more advanced and sophisticated analysis.

For more information, please refer to the following webpage:
Materials Characterization Support Team

Job title and Job description

Job title

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

Job description

The successful candidate will conduct scanning and transmission electron microscopes (SEM and TEM), and small-angle X-ray scattering (SAXS) measurements of polymer samples. In-situ measurements of polymer samples will be performed using SEM and SAXS under imposing temperature and mechanical force. Additionally, the successful candidate will analyze the structure of polymers in collaboration with researchers specializing in synthetic and theoretical chemistry. Routine maintenance and troubleshooting of the TEM, SEM, and SAXS instruments will also be part of their responsibilities.

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 the relevant research field. Otherwise, the candidate should be able to obtain a doctoral degree in the relevant research field by the work starting date. Experiences in electron microscopy or small-angle X-ray scattering measurements are desired.

Work location

Materials Characterization Support Team, RIKEN Center for Emergent Matter Science
(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 based on evaluation, to a maximum 5 years of employment.
  • 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 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 305,100 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 annual salary at the time of employment:
The monthly salary including discretionary work allowance at the time of employment will be 342,915 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 should be uploaded to the following link:

For Postdoctoral Researcher position, Materials Characterization Support Team, Center for Emergent Matter Science

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

Recommendation letters must be directly submitted from the referees to the following link with the subject line " Center for Emergent Matter Science, position name [applicant’s name] (Recommendation letter)". Please specify the applicant's name, referee's name and contact information in the recommendation letter.

For Postdoctoral Researcher position, Materials Characterization Support Team, Center for Emergent Matter Science

After the referees upload the recommendation letter, please let us (hashi [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: hashi [at] riken.jp.

Note: Application 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 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

Materials Characterization Support Team, RIKEN Center for Emergent Matter Science
Email: hashi [at] riken.jp
For inquiries, please send an email.