The Institute of Mathematics and Informatics of the Bulgarian Academy of Sciences (IMI-BAS) announces a postdoctoral position for 1-2 years. The position is affiliated with IMI-BAS and the International Center for Mathematical Sciences – Sofia (ICMS-Sofia). It is financially supported by Assist. Prof. Antoni Rangachev's Swiss National Science Foundation grant ``Topological, Metric and Algebraic Equisingularity Theory" and funds from the Ministry of Education and Science of the Republic of Bulgaria. 

The position is in the area of singularities of algebraic and complex analytic varieties. Applicants should hold or be close to completing a PhD in mathematics. It is desirable that they have research experience in at least one of the following areas: families of singularities, singularities in mixed characteristic, equisingularity theory, Milnor fibrations and topology of singularities, birational geometry, valuation theory, commutative algebra/integral closure methods, metric geometry of singularities. 

The positions could lead to a permanent job in the Institute of Mathematics and Informatics. For more information please contact Assist. Prof. Antoni Rangachev at rangachev@math.bas.bg. 

Application procedure. The candidates need to provide a CV, a research plan, a motivation letter, and at least 2 recommendation letters. Application materials should be sent to pdj@math.bas.bg. The submission deadline is January 10, 2026. However, applications will be accepted until the position is filled.

Selection process. Applications will be reviewed after the deadline. Shortlisted candidates will be invited to interviews at the end of January, 2026, and final decisions will be communicated in early February, 2026. 

Starting date: May 1, 2026 (flexible).