The University of Helsinki ( is an international scientific community of 40,000 students and researchers. It is one of the leading multidisciplinary research universities in Europe and ranks among the top 100 international universities in the world.

The Department of Mathematics and Statistics ( is the largest university department for mathematical sciences in Finland. The multifaceted research carried out at the Department of Mathematics and Statistics has received the highest points in several evaluations. The department collaborates actively with other universities, as well as with many research institutes in the sector, both at home and abroad. The department belongs to the Faculty of Science. The department is located at the Kumpula Campus.

The Department of Mathematics and Statistics, Faculty of Sciences, University of Helsinki invites applications for a

Postdoctoral Researcher in Optimization for Inverse Problems

Background and aim
The solution of inverse is crucial in many modern technologies, such as medical and astronomical imaging devices. As the physical technologies improve, and become more widespread, we are faced with increasing amounts of data, as well as the need to process them into higher-quality results. We would also like to use as little energy as possible, and get results in real time. For this we need very good optimisation algorithms: instructions for a computer to find the point where a mathematical function reaches its smallest value, akin to the bottom of a valley among hills.

The postdoctoral researcher is expected to develop efficient optimization methods specifically adapted to the structure of inverse problems.

The research will be carried out in close contact with the Finnish Centre of Excellence in Inverse Modelling and Imaging (

Funding and requirements
The salary is based on the University of Helsinki salary system. For a post-doctoral researcher, the starting salary will be 3100–3800 euros/month, depending on the appointee’s qualifications and experience.

The starting date is negotiable, preferably in September 2020. The project is funded by the Academy of Finland with the initial period of funding running until the end of August 2021. An extension is foreseen.

Candidates should have

• A PhD degree in mathematics or a related field such as computer science or physics (with proof of abilities in mathematics) by the time of the start date of the position
• Past research experience in inverse problems and/or optimization
• The ability to work independently

How to apply
Please submit as a single pdf file:

• A letter of motivation describing the applicant’s previous research experience and
future research interests (max one page)
• The introduction section of a PhD dissertation, or a link where the entire dissertation can be downloaded online (in English)
• A CV including a list of publications
• Contact details of at least 2 senior academics available to provide references
• A transcript of doctoral studies and (if already graduated) a degree certificate of the PhD degree

The letter of motivation should also indicate possible starting dates.

The deadline for submitting the applications is March 1st, 2020. Review of applications will begin immediately and continue until the position is filled.

Please submit your application via the University of Helsinki Recruitment by clicking the Apply for the position button below.

Applicants who are employees of the University of Helsinki are requested to leave their application via the SAP HR portal.

Additional information
For more information on the position, please contact Academy Research Fellow Tuomo Valkonen by email, tuomo.valkonen(at)

Due date

01.03.2020 23:59 EET