1-year 100% Postdoc position in speciation genomics Unravel the genomic architecture of temporal isolation in Alpine butterflies The project: Zones of secondary contact between formerly isolated lineages allow to study how reproductive isolation evolves and co-existence is maintained. The role of temporal isolation through allochrony has especially remained elusive. We identified a unique system of parallel contact zones between strongly divergent sibling species of butterflies, where they occur in alternating years for at least the last five decades. Our preliminary results show that one species lost the W sex chromosome and that interspecific gene flow is unidirectional. This project aims to unravel the genomic architecture and evolutionary impact of temporal isolation in one of the most emblematic and diverse groups of Alpine butterflies - Erebia. For this project, you will analyse a population genomic dataset comprising >600 individuals to identify the genomic architecture of temporal isolation and allele frequency shifts through time. All data for two high impact publications is already available. The prospective candidate will join the group of Prof. Dr. Kay Lucek that is funded through a Swiss National Science Foundation (SNSF) Eccellenza fellowship and be part of the Biodiversity Genomics laboratory at the University of Neuchi ¢tel in Switzerland. Your profile: Enthusiastic, self-driven, responsible, and highly-motivated; excellent communication and interpersonal skills in verbal and written English; a strong work ethic. The ideal candidate brings a strong evolutionary background together with profound genomic and/or bioinformatic skills. Applicants must have a PhD degree in evolutionary biology, genomics, bioinformatics, or close related fields. We offer you: A cutting-edge position fully funded by the SNSF, based at the Institute of Biology, University of Neuchi ¢tel, Switzerland. The Institute offers a vibrant and interdisciplinary research environment, combining a broad spectrum of research activities in life sciences, including evolutionary genetics and conservation. Salary and social benefits are provided according to University of Neuchi ¢tel rules. Neuchi ¢tel is an enchanting historic Swiss city in the French speaking part, well connected by public transport and offering a broad range of cultural and recreational activities. Starting date: The anticipated starting date is latest by the 1st of March 2026, with some flexibility. Application: Motivated applicants should submit (1) a one-page letter describing yourself and your match to the above-mentioned project, (2) a CV describing your education, publications, and relevant work experience, (3) contact information of two references. The final application deadline being the 15th of January 2026. Please, send all the information in a single PDF to Kay Lucek (kay.lucek@unine.ch). Feel free to contact me for any questions concerning the project. Lucek Kay (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)