Vacant job

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Your responsibilities

The project's contribution will lie at the intersection of random matrix theory and statistical inference theory, with applications in several scientific fields. Particular emphasis will be placed on practical problems within economics and finance, such as the construction of optimal portfolios in high dimensions.

Given the widespread use of generalized inverses of sample matrices in practical applications, especially when the dimension of the data-generating process exceeds the number of observations, the project aims to develop the distributional properties of generalized inverses of the high-dimensional sample covariance matrix. The project will improve estimators of high-dimensional quantities by developing new linear and non-linear shrinkage methods.

In particular, new estimators for optimal portfolio weights will be derived, which is expected to lead to significantly more stable and less risky trading strategies.

As a doctoral student, you will focus on your doctoral education and the research project you are part of. Your work may also include teaching or participating in other departmental duties, up to 20 percent of full-time employment.

Your qualifications

You have a master's, magister, or civil engineering degree with a focus on industrial economics, financial mathematics, technical mathematics, or equivalent, which may be relevant for the position. Alternatively, you have acquired substantially equivalent knowledge in another way. Your degree must be completed no later than the time the employment decision is made, meaning you can apply for the position while completing your studies.

You have good teamwork skills and are able to establish and maintain good professional relationships. Good knowledge of English is required for the position, and good knowledge of Swedish is an advantage.

Your workplace

Read more about your workplace here: https://liu.se/organisation/liu/iei/pek (https://liu.se/organisation/liu/iei/pek)

About the employment

Upon commencement of employment, you will be admitted to the doctoral studies. Read more about the doctoral studies at each faculty https://liu.se/forskning/forskarutbildning (https://liu.se/forskning/forskarutbildning)

The employment as a doctoral student leading to a licentiate degree is time-limited, normally to two years full-time. Extension of employment is based on the extent of teaching and departmental duties. Under special circumstances, further extension may occur. You are initially employed for one year, after which the employment is renewed for up to two years at a time, based on the achieved study plan.

A security check may be conducted before a decision on employment is made.

Salary and benefits

The doctoral student salary is regulated according to a locally agreed salary scale. Read more about benefits for employees https://liu.se/jobba-pa-liu/formaner (https://liu.se/jobba-pa-liu/formaner).

Trade union representatives

Information about trade union representatives, see https://liu.se/jobba-pa-liu/hjalp-for-sokande (https://liu.se/jobba-pa-liu/hjalp-for-sokande).

Application

You apply for this position by clicking the "Apply" button below. Your application must reach Linköping University no later than August 15, 2026. Applications received after the deadline will not be considered.

We welcome applicants with diverse backgrounds, experiences, and perspectives, as this enriches and develops our operations. For us, it is natural to safeguard everyone's equal value, rights, and opportunities. Read about our work with equal opportunities (https://liu.se/artikel/lika-villkor/).

We look forward to receiving your application!

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