**Two postdoctoral opportunities in population genetics and bioinformatics** Two postdoctoral positions are open for researchers interested in human evolutionary and population genetics, at the University of Sao Paulo, in Brazil One position will be supervised by Diogo Meyer, at the University of Sao Paulo, and will focus on the development of population genetic models of strong balancing selection, as is the case of MHC genes. Using genomic data, the project aims to explore the interactions between selection and demographic history, with particular attention to admixed populations, such as that of Brazil. Current projects address adaptive introgression in the MHC region, distinguishing between selective regimes shaping MHC diversity, understanding the role of selection in maintaining common haplotypes, and relating variation in MHC diversity across continental ancestries to equitable access to transplantation. The second position will be co-supervised with Erick Castelli, at the Universidade Estadual Paulista, with a focus on the development of computational tools for the analysis of highly polymorphic genes related to the immune system (HLA and KIR). Both positions are funded by FAPESP (https://fapesp.br/en) postdoctoral scholarships, with initial appointment of 12 months, but renewable for up to 4 years. Ideal start date is June 2025 but negotiable. If you are interested in these positions or would like more information, please contact Diogo Meyer (diogo@ib.usp.br) or Erick Castelli ( erick.castelli@unesp.br) More information on the positions can be found in the following links: Population genetics position - fapesp.br/oportunidades/7974 Bioinformatics position - fapesp.br/oportunidades/7975 Diogo Meyer (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)