The University of Bremen at MARUM - Center for Marine Environmental Sciences within the Cluster of Excellence «The Ocean Floor - Earth's Uncharted Interface» is seeking to fill - subject to the approval of funds - starting on January 1, 2026 at the earliest, up to 15 positions as Research Associates (Doctoral Candidates) (f/m/d) German Salary Scale 13 TV-L/TVöD (depending on the project partner) at 75% of the regular weekly working hours (29.International applications are expressly encouraged. The Cluster of Excellence is a joint project of the Universities of Bremen and Oldenburg and a consortium of five partner institutions: Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Max Planck Institute for Marine Microbiology, Leibniz Centre for Tropical Marine Research, Constructor University and the Hanse-Wissenschaftskolleg - Institute for Advanced Study. Funded by the German Excellence Strategy, the cluster quantifies exchange processes at the ocean floor and investigates their role in the Earth system. The cluster's research portfolio consists of projects that (i) decipher the processes that control the transport of biogenic particles to the ocean floor under changing climate conditions, (ii) balance the transfer of carbon and other elements between the ocean floor and seawater, (iii) investigate how ecosystems on the ocean floor react to environmental changes and (iv) develop scenarios for a «warmer world» from climate archives on the ocean floor with the help of climate models. Along these central research topics, the Cluster offers a structured training for doctoral students in an interdisciplinary framework of marine biogeochemistry, marine geosciences, marine (micro)biology and (paleo)climatology. The program offers rich opportunities for interdisciplinary exchange and collaboration across different disciplines of marine sciences, including research stays at partner institutions. Further details on the training program can be found at https://de/en/The-Ocean-Floor/ECR-support.html Follow the links for detailed project descriptions and application requirements. Heiko Pälike (speaker-exc-oceanfloor@uni-bremen.de) or the responsible researchers of the individual projects for further information. Place of employment and remuneration (TV-L or TVöD) depend on the partner institutions where the project is located. Further information can be found in the project descriptions. A secure salary and statutory health and social insurance. In the Cluster of Excellence, doctoral researchers are mentored by a team of experienced scientists and benefit from a large international network of doctoral researchers. In addition, 30 days of vacation are standard with us. Our health management offers you, e.g., discounted company fitness programs, as well as internal health-promoting offers (e.g. health courses). You can apply for up to three projects, stating a prioritization. 5 MB) by unencrypted electronic mail to: office-exc-oceanfloor@uni-bremen.MARUM - Center for Marine Environmental Sciences, University of Bremen University of Bremen Prof. Physik Chemie Biologie Geowissenschaften Physik Doktorand, Doktorandin Wissenschaftlicher Mitarbeiter, wissenschaftliche Mitarbeiterin Lehre & Forschung, Wissenschaft Universität Forschungseinrichtung Teilzeit