We invite applications for a 2-year postdoctoral position in the Microbiogeochemistry Lab at the Institute of Earth Surface Dynamics (IDYST) at the University of Lausanne. The newly launched research group headed by Prof. Berg specializes in the application of interdisciplinary approaches – borrowing methods from the fields of biology, geology and chemistry – to solve complex environmental questions related to biogeochemical cycling. Steady-state concentrations of certain redox species may arise from the balance between continuous oxidation and reduction reactions, and although concentration changes cannot be measured, their rapid turnover can play a key role in the environment and sustain highly active and diverse microbial communities. This project will focus on hidden or “cryptic” microbial processes and their impact on Fe, S, and O cycling on ancient earth to modern-day ecosystems. The deadline for applications is August 20, 2021.