Postdoctoral position - biomarker lipid application in soil profiles

100 %BrancheRegionThe Earth Ecosystem Dynamics Group (Geological Institute, Department of Earth Sciences) at ETH Zurich is looking for a highly motivated post-doctoral researcher with interest in soil carbon, organic geochemistry and past environmental changes to work on developing the subsurface (mineral soil profiles) as geological archives for lipid biomarkers and soil organic matter composition. Your research will be part of the funded SNSF starting grant research project ROOTS (PI: Dr. Cindy De Jonge): “Reconstructing soil fertility across Time and Space”.Project backgroundCurrently, soils store a large fraction of the CO2 emitted into the atmosphere. However, whether they will continue to do so in the future is unclear, as soil fertility potentially limits the amount of primary production (carbon fixation) and belowground carbon storage. A historical perspective, i.e. looking at past changes in soil fertility and carbon storage, can elucidate these processes on timescales that exceed experimental approaches (decades to millennia). In this project, you will test whether mineral soil columns can be used as geological archives. Specifically, we need to determine whether biomarker profiles that reflect past fertility changes can be compared with bulk organic matter parameters that reflect organic matter source and conservation.Integrate in the Earth and Ecosystem Dynamics group, where 2 PhD students work on developing lipid biomarkers for soil fertility.Propose your own research approaches to answer previously outlined research questions. Methods used in the group encompass a breadth of organic geochemical approaches (GC-FID, GC-MS, HPLC-APCI-MS, HPLC-ESI-Orbitrap). In collaboration with the group of Sebastian Doetterl (https://soilres.ethz.ch/), additional soil parameters can be measured.Take over minor responsibilities for equipment in the organic geochemistry laboratory (manual and automated extraction, GC-FID, GC-MS, HPLC-APCI-MS), ensuring that high-quality laboratory work and measurements can be performed.Generate datasets, draft manuscripts and finalize manuscripts for peer-reviewed publication in collaboration with the project PI (C. De Jonge).ProfilePhD in organic geochemistry or soil science, preference for experience with soil cores and/or soil organic matter description and quantification.Interest in developing mineral soil columns as geological profiles.Ability to work in an international group where diversity and well-being is valued.Availability for up to 24 months between 03.2026 and 08.2028.We offerA two year contract that allows to contribute to an exciting new avenue in organic geochemistry.Financial support to conduct fieldwork and visit selected conferences.Possibility to gain experience with teaching.Incorporation in a small team with a dedicated PI. In this team we value diversity and use flexible working hours, a possibility for part-time work, and home office to facilitate a work-life balance.Inclusion in the world-class department of Earth and Planetary Sciences at ETH Zurich.In line with our values , ETH Zurich encourages an inclusive culture. We promote equality of opportunity, value diversity and nurture a working and learning environment in which the rights and dignity of all our staff and students are respected. Visit our Equal Opportunities and Diversity website to find out how we ensure a fair and open environment that allows everyone to grow and flourish.Curious? So are we.We look forward to receiving your online application with the following documents, by 14.11.2025:Letter of motivation (maximum 2 pages), outlining why you are a good match for this profile, and what skills and expertise you want to develop during this 2-year project.A short narrative on up to three outcomes from your PhD (can be manuscripts, but can also be other achievements or outcomes), maximum 1 page.The contact details of two references (name, e-mail, phone number). No letters of support are currently needed.Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.Further information about the Earth and Planetary Science department can be found on our website . Questions regarding the position should be directed to Prof. Cindy De Jonge, email cindy.dejonge@eaps.ethz.ch (no applications). A shortlist will be made by 14.12.2025. Initial interview rounds will be done online in mid-January.We would like to point out that the pre-selection is carried out by the responsible recruiters and not by artificial intelligence.ETH Zurich is one of the world’s leading universities specialising inscience and technology. We are renowned for our excellent education,cutting-edge fundamental research and direct transfer of new knowledgeinto society. Over 30,000 people from more than 120 countries find ouruniversity to be a place that promotes independent thinking and anenvironment that inspires excellence. Located in the heart of Europe,yet forging connections all over the world, we work together todevelop solutions for the global challenges of today and tomorrow. #J-18808-Ljbffr