Postdoc in modelling of early prokaryote evolution and interaction with earth geodynamics

As a postdoctoral researcher, you will develop and implement an interdisciplinary research programme investigating the evolution of early prokaryotic life in its geodynamic and climatic context. You will work at the interface of evolutionary biology, molecular evolution, geodynamics, Earth-system science, and planetary habitability. Your main responsibilities will include: Building up on existing modeling of anerobic autotrophs and heterotrophs (Sauterey et al 2020, Nasreldine et al in prep) to design a model simulating assemblages of metabolic communities as a function of global and local chemical and physical conditions. Building up on existing models of carbon and nutrient cycling and atmospheric evolution during the Archean (Affholder et al., 2025; Affholder et al in prep) to investigate how evolving geophysical and geochemical processes may have constrained or have been affected by evolving early metabolic assemblages. Using outputs geodynamic simulations as constrains of geophysical and geochemical processes to investigate how varying planetary conditions (different lithospheric strength, interior density profiles, mantle rheology) may facilitate or hinder certain evolutionary transitions in early metabolisms. Using these models to explore how biological evolution can alter planetary conditions and potentially drive systems toward alternative stable states. Communicating research findings through scientific publications, presentations at international conferences, and collaboration with project partners.

The National Centre of Competence in Research NCCR Genesis is a research infrastructure project funded by SNSF focussing on exploring the emergence of life in the Universe. This interdisciplinary research infrastructure brings together physicists, earth and planetary scientists, chemists and biologists to understand the conditions and the mechanisms that enable life to emerge. Developing reliable methods to detect reliable traces of life (biosignatures), whether through remote sensing or direct onsite measurements, requires significant innovation. These challenges demand close collaboration across physics, biology, chemistry and the earth sciences. NCCR Genesis does not aim to provide answers in all fields, but to drive innovative research and achieve decisive progress. NCCR Genesis is deeply committed to equality, diversity and inclusion. Our aim is to cultivate a respectful and fair work culture with equal access to professional development and support for all. We strongly encourage applications from under-represented groups.

• A PhD in geobiology, biogeochemistry, Earth sciences, geodynamics, planetary science, computational biology, or a closely related field.

• A strong background in interdisciplinary work is encouraged

• Strong experience in quantitative research, computational modelling, data analysis, or a combination thereof

• Demonstrated ability to work independently to formulate research questions, develop hypotheses, design analyses, and interpret results

• Experience in geophysical/geochemical modeling or in bioenergetics, population ecology, eco-evolution

• Strong scientific programming and data-analysis skills, preferably in Python, R, MATLAB, Julia, or a comparable language

• Ability to critically evaluate model assumptions and integrate evidence from different types of data

• Strong interest in evolutionary processes, early life, Earth-system evolution, or planetary habitability

• Excellent analytical and problem-solving skills, with the ability to work on complex interdisciplinary questions

• Ability to communicate scientific results clearly in written and spoken English

• A collaborative mindset and willingness to work across disciplinary boundaries

• Strong organisational skills and the ability to manage an independent research programme