Universität Duisburg-Essen
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PhD Position in Polyphosphate Metabolism and Phosphate Homeostasis in Archaea University of Duisburg-Essen in Germany
Degree Level
PhD
Field of study
Physiology
Funding
PhD position funded by the German Research Foundation (DFG) for 36 months at TV-L 13, 65% employment (26 hours 53 minutes), gross salary stated as €38,560–€54,807. The post is part of a research project and includes standard university benefits.
Deadline
Nov 5, 2026
Country
Germany
University
Universität Duisburg-Essen

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About this position
PhD position at the University of Duisburg-Essen, Faculty of Chemistry, in the research group of Prof. Dr. Bettina Siebers (Molecular Enzyme Technology and Biochemistry). The project is embedded in environmental microbiology and biotechnology and is funded by the German Research Foundation (DFG).
The doctoral project focuses on the role of polyphosphate (PolyP) and phosphate (Pi) homeostasis in archaea, using the thermoacidophilic model organism Sulfolobus acidocaldarius. Research topics include archaeal genetics, biochemical and enzymological characterization, quantitative physiology, protein-protein and protein-polyP interactions, and multi-omics/systems biology approaches.
Applicants should have a completed Master/Diplom in biochemistry, molecular biology, microbiology, biotechnology, or a related field. Strong practical experience in molecular biology, microbiology, and/or protein biochemistry is expected; protein purification and enzyme characterization are advantageous. Very good English skills, independent and structured working habits, and strong teamwork/communication skills are required.
The position starts as soon as possible, lasts 36 months, and is paid according to TV-L 13 at 65% employment. The post includes a broad interdisciplinary research environment, collaboration with a complementary doctoral project, support for scientific qualification, conference participation, and publication opportunities.
Application deadline: 2026-11-05. Apply online with the usual documents and reference number 498-26.
Funding details
PhD position funded by the German Research Foundation (DFG) for 36 months at TV-L 13, 65% employment (26 hours 53 minutes), gross salary stated as €38,560–€54,807. The post is part of a research project and includes standard university benefits.
What's required
Completed scientific university degree (Master/Diplom) in biochemistry, molecular biology, microbiology, biotechnology, or a related field. Strong knowledge and practical experience in molecular biology, microbiology, and/or protein biochemistry methods are required. Experience in protein purification and enzyme characterization is an advantage. Interest in metabolism, regulation, and physiology of microorganisms is expected; prior knowledge of archaea or extremophiles is welcome but not required. Very good English skills, independent and structured working style, and strong teamwork and communication skills are required.
How to apply
Apply online with the usual documents (cover letter, CV, attachments) and quote reference number 498-26. The application is addressed to Prof. Dr. Bettina Siebers at the University of Duisburg-Essen.
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