Your tasks You will contribute to cutting edge research on ion transport in multilayer polymer electrolytes within a jointly funded SNF collaboration between the Paul Scherrer Institute PSI and the Luxembourg Institute of Science and Technology LIST. In this interdisciplinary project on multilayer polymer electrolytes, you will primarily focus on polymer design, synthesis, processing and characterization, contributing to the development of next generation solid state battery materials. * Developing and optimizing polymer electrolyte formulations * Designing and fabricating multilayer polymer electrolyte architectures * Evaluating ionic transport and performance by integrating polymer design tasks with electrochemical measurements * Publishing results in scientific journals and presenting findings at international conferences * Actively contributing to a collaborative research environment involving PSI and international partners Your profile * PhD degree in polymer science, materials science, chemistry, electrochemistry, or a closely related field * Strong background in polymer synthesis, polymer modification, polymer physics, polymer electrolyte development * Experience with polymer processing techniques and understanding of polymer structure-property relationships * Interest in applying polymer science to solid state battery materials * Familiarity with electrochemical testing or materials characterization is an advantage * Strong problem solving skills and the ability to work both independently and within interdisciplinary collaborations * Excellent communication 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, with the possibility of extension depending on project development and funding. For further information, please contact Dr Sigita Trabesinger, email sigita.trabesinger@psi.ch. Please submit your application online by 25 May 2026 (including list of publications and addresses of referees) for the position as a Postdoctoral Fellow (Index-Nr. 5312-27817). Paul Scherrer Institute, Human Resources Management, Mariusz Prus, 5232 Villigen PSI, Switzerland