Postdoctoral Researcher, Operator Theory and Complex Analysis - Hiring in process/Finished, not possible to apply

The University of Eastern Finland is inviting applications for a Postdoctoral Researcher position (Operator Theory and Complex Analysis) at the Department of Physics and Mathematics on the Joensuu campus. The position will be filled for a fixed term of two years as from 1 November 2026 (or starting date as agreed).

Please find more information below and submit your application no later than 1 October 2026.

Role and salary 

We are seeking a highly motivated and talented Postdoctoral Researcher to work full-time in the field of Operator Theory and Complex Analysis. The Postdoctoral Researcher will conduct research as part of the Research Council of Finland project “Spectral and Asymptotic Analysis of Structured Matrices and Operators.” The project focuses on the spectral theory and asymptotic analysis of structured matrices and operators, Crouzeix theory and numerical ranges, as well as applications to mathematical physics and random matrix theory.

As our new Postdoctoral Researcher, your main responsibilities will include:

• conducting high-quality research in the field of Operator Theory and Complex Analysis, and related scholarly activities, including the preparation of manuscripts for publication
• producing high-quality scientific publications and reporting research outcomes
• presenting research at conferences and other academic events
• contributing to teaching activities and the supervision of PhD and Master’s students (up to 5% of the position)

The position will be filled for a fixed term of two years as from 1 November 2026 (or starting date as agreed) due to the position pertaining to a specific project task. A trial period is applied to all new members of the staff.

The salary of the position is determined in accordance with the salary system for Finnish universities. The salary comprises two components: a job-related salary element and a personal salary element. For a Postdoctoral Researcher, the job-related salary element is based on level 5 of the job requirement level chart for teaching and research staff. The personal salary element is 6–50% of the job-related salary element. At the beginning of the employment, the total salary will be approximately EUR 3,985 – 4,190 /month.

Our requirements and expectations

Requirements

• a doctoral degree, e.g., in mathematics or another relevant field. The doctoral degree may not have been completed more than five years ago at the time of accepting the position (a net period of time, which does not include parental leave, military service, etc.)
• good skills in spoken and written English
• a strong background in concrete operator theory, complex analysis, and quantum physics, as demonstrated through their publications and an interview.

Please note that the applicant must fulfil the stated requirements by the end of the application period.

The following will be considered an advantage

• a strong research background in Toeplitz and related operators, Riemann–Hilbert problems, numerical ranges, and their applications to mathematical physics and random matrix theory.

Your benefits 

You will have access to the university’s staff benefits, including

• the opportunity for flexible multi-location work
• excellent opportunities for professional development and continuous learning
• extensive occupational health care
• a broad selection of staff training
• staff discount on lunch in our campus restaurants, as well as on a range of other services
• affordable sports services

Please read more in the Work at UEF section on our website.  

You will have an opportunity to work in a meaningful role as part of our international, creative, participatory and inclusive academic community.

Enjoy your life in Finland! Known for its cleanliness, welfare know-how, modern technology and superb education system, Finland is an exotic and safe country to work in. Please visit the Life in Finland section on our website to learn more.

How to apply?

Submit your application by using our electronic application form no later than 1 October 2026 by 23:59 (midnight) Finnish time (UTC+3).

Please note that you must include the following appendices in your application:

• CV (Template for a CV, TENK website)
• a list of publications (Instructions, Research Council of Finland website)
• copies of your academic degree certificates / diplomas, and copies of certificates / diplomas relating to your language proficiency, if not indicated in the academic degree certificates/diplomas
• a motivation letter (max. 2 pages). In the letter, please indicate why you are interested in this research project and why you would be a suitable candidate for this position
• other documents to demonstrate the applicant’s merits for the position

If your diploma is not in English, Finnish or Swedish, an official English translation must be provided. All translations must be issued either by the awarding educational institution or an authorised translator. Each page of the official translation must bear the translator’s stamp and/or signature. Official translations must be accurate translations of the original documents. Translations made by the applicants themselves are not accepted.

Questions?

For further information on the positions, please contact Professor Jani Virtanen, email: jani.virtanen@uef.fi, tel. +358 29 445 3025.

For further information on the application procedure, please contact HR Specialist Iiris Korhonen, email: iiris.korhonen@uef.fi, tel. +358 29 445 8161 and HR Specialist Noora Hämäläinen, email: noora.hamalainen@uef.fi, tel. +358 29 445 8302.

Haemme tutkijatohtoria Itä-Suomen yliopistolle. Tehtävä sijoittuu luonnontieteiden, metsätieteiden ja tekniikan tiedekuntaan fysiikan ja matematiikan laitokselle Joensuun kampukselle. Tehtävä alkaa 1.11.2026 (tai sopimuksen mukaan), ja se täytetään kahden vuoden määräajaksi. Tutkijatohtorin tehtävässä tehtäväkohtainen palkanosa on vaativuustasoluokittelussa tasolla 5. Lisäksi maksetaan henkilökohtaiseen suoriutumiseen perustuvaa palkanosaa, joka on 6–50 % tehtäväkohtaisesta palkanosasta. Tehtävässä edellytetään hyvää englannin kielen taitoa.

Lue tarkemmat tiedot tehtävästä ja hakuohjeet yllä olevasta englanninkielisestä ilmoituksesta. Jätäthän hakemuksesi englanniksi. Hakuaika tehtävään päättyy 1.10.2026.