Your tasks * Design and conduct radioligand therapy studies *in vitro* and in cancer mouse models to preclinically develop safe and efficacious innovative cancer treatment * Investigate tumor biology and tumor-microenvironment interactions, including target expression, tumor heterogeneity, treatment response, and resistance mechanisms, to support rational therapy development and optimization * Work in an interdisciplinary environment, collaborating closely with research partners and supporting the team with data and scientific expertise * Analyze and report experimental results through scientific presentations and publications with a focus on clinical translation Your profile * PhD degree in radioligand therapy, cancer therapeutics, tumor biology or a related field * Experience in cancer mouse models - prostate cancer model is an advantage * Willingness to work with radionuclides and mouse models is essential * Knowledge of drug screens, omics technologies (e.g., Proteomics) is a plus * Strong motivation, excellent communication and presentation skills in English We offer Our institution is based on an interdisciplinary, innovative and dynamic collaboration. You will profit from a systematic training on the job, in addition to personal development possibilities and our pronounced vocational training culture. If you wish to optimally combine work and family life or other personal interests, we are able to support you with our modern employment conditions and the on-site infrastructure. Your employment contract is limited to 2 years. For further information, please contact Dr Michal Grzmil, e-mail ( michal.grzmil@psi.ch). Please submit your application online by 1 March 2026 (including list of publications and addresses of referees) for the position as a Postdoctoral Fellow (Index-Nr. 2222-26166). Paul Scherrer Institute, Human Resources Management, Pascale Bärtschi, 5232 Villigen PSI, Switzerland