Faculty of Science, Mathematical Sciences

The University of Oulu is one of the biggest and most multidisciplinary universities in Finland. We create new knowledge and innovations that help to solve global challenges. We offer you an international and inspiring working environment where you are given responsibility and can use your skills, develop yourself and do work that matters. Our flexible and family-friendly workplace makes it easy for you to balance work and leisure. The University of Oulu is ranked in the top 3% of the world´s universities. 

The Inverse Problems Group at the University of Oulu is announcing a

Postdoctoral position on "Nonlinear Inversion in Low-Field MRI".

The position is located at the Research Unit of Mathematical Sciences, which has an internationally strong position at the forefront of research in its focus areas. The Inverse Problems Group within the Research Unit is a member of the Finnish Center of Excellence in Inverse Problems Research, funded by the Academy of Finland for the period 2018 – 2025.

About the project

In low-field MRI many ideal assumptions of the high-field equivalent are not fully satisfied, and hence advanced reconstruction methods are necessary to obtain satisfactory reconstructions. In this project, the candidate is expected to perform fundamental research on advanced image reconstruction techniques while taking into account the nonlinear nature of MR signal generation. 

As part of the project, the candidate is expected to take part in planning and potential construction of an in-house research low-field MR within the collaborative consortium. 

The project will be conducted in collaboration with Prof. Miika Nieminen at the Research Unit of Medical Imaging, Physics and Technology, University of Oulu and Assoc. Prof. Mikko Nissi and Prof. Ville Kolehmainen at the Department of Technical Physics, University of Eastern Finland.

What we offer?

  • The support of an experienced and enthusiastic team within the Finnish Center of Excellence in Inverse Problems Research, where you can share your expertise and grow as an expert.
  • Wellness benefit ePassi covering sport, culture and well-being. Read more about other staff benefits here.
  • Development and career options provided by the University of Oulu.
  • An exciting and meaningful project at a workplace that promotes flexibility and work-life balance. Read more about working with us.


A doctoral degree in a related field of Inverse Problems, such as applied Mathematics, applied or medical physics, computer science, or similar. Some post-doctoral experience is of advantage.

The ideal candidate should have experience in Inverse Problems and their computational solution. Experience within magnetic resonance imaging or nonlinear inverse problems will be of benefit. Programming skills in Matlab or Python are essential. Exceptionally strong applicants in other areas of inverse problems will be considered too.

Grounds of assessment

Special emphasis will be given to research expertise within the subject field, demonstrated by outstanding international publications and demonstration of independent research. Pedagogical expertise, including teaching experience, pedagogical training and the skill to create teaching material will be taking into account.

Work abroad and other international experience will be regarded as an asset.

You are expected to be able to renew their research activities as well as those of the research unit and to establish independent research directions. The long-term development potential as well as the ability to establish and develop research collaboration is significant. Any evidence of acquiring external research funding will also be significant.

The potential to develop and lead research activities is important.


The new postdoctoral researcher will be responsible for developing research, teaching and supervision of the Research Unit. The teaching duties will not exceed 20 % of the working time.


The position is fixed-term for 2 years as and can be filled as soon as possible, but no later than 01.01.2024.

The salary will be based on the levels 5-6 of the demand level chart for teaching and research staff of Finnish universities. In addition, a salary component based on personal work performance will be paid (maximum of 50 % of the job-specific component). Starting gross salary will be approx. 3500-4000 € per month (before taxes).  

A trial period of 6 months is applied in the position.

How to apply?

Interested? If yes, please apply by April 14th 2023  (23:59 Finnish local time) through our recruitment system.

The application should be written in English and include the following:

  1. Cover letter
  2. CV, following the guidelines of the Finnish Advisory Board on Research Integrity: http://www.tenk.fi/en/template-researchers-curriculum-vitae
  3. Research statement (max. two pages) with a special emphasis on how the plan benefits the project.
  4. List of publications, following the guidelines of the Academy of Finland: https://www.aka.fi/en/research-funding/apply-for-funding/how-to-apply-for-funding/az-index-of-application-guidelines2/list-of-publications/
  5. Certificates/Diplomas
  6. Contact details of 2 persons available for recommendation

The eligible applicants fitting best in the profile expected for the position will be invited to an on-site or remote interview. All applicants will be notified during the selection process.

We welcome applicants from different backgrounds, such as people of different ages, different genders and members of different language, cultural or minority groups. 

Contact Information

If you have any further questions, please contact

Associate Professor & Academy Research Fellow Andreas Hauptmann,
Research Unit of Mathematical Sciences, University of Oulu

Professor Miika Nieminen
Research Unit of Medical Imaging, Physics and Technology

Associate Professor Mikko Nissi
Department of Technical Physics, University of Eastern Finland

Ville Kolehmainen
Department of Technical Physics, University of Eastern Finland

Type of employment Temporary position
Contract type Full time
Number of positions 1
Full-time equivalent 100
City Oulu
Country Finland
Reference number 2023/172
Published 01.Mar.2023
Last application date 14.Apr.2023

Return to job vacancies