We seek to appoint an Associate Professor (or Professorship) of Geobiology to start no later than 31 July 2020, or as soon as possible thereafter. The successful candidate will work at the Department of Earth Sciences and will hold a Fellowship at Wolfson College. The appointment will be initially for 5 years at which point, upon completion of a successful review, the postholder will be eligible for reappointment to the retiring age. We welcome applications from scientists working in all aspects of Geobiology. We encourage applicants with expertise on the influence of life on the Earth system, including but not limited to study of biological revolutions and innovation in Earth history, remote characterisation of biosphere function, the deep biosphere, life in extreme environments, and molecular palaeobiology. We are particularly interested in candidates with a strong track record in using or developing tools such as those presented by the ‘omic’ revolution (e.g. bioinformatics, genomics, proteomics, metabolomics) and/or sedimentary geochemistry/mineralogy to develop our understanding of these biological systems in their geological context. This expertise plays into cutting edge research on the coevolution of the Earth and life in both terrestrial and marine systems either today or in the past, and in understanding the conditions for life on other planets. The closing date for application is December 20, 2019.