The Paul Scherrer Institute PSI is the largest research institute for natural and engineering sciences within Switzerland. We perform cutting-edge research in the fields of future technologies, energy and climate, health innovation and fundamentals of nature. By performing fundamental and applied research, we work on sustainable solutions for major challenges facing society, science and economy. PSI is committed to the training of future generations. Therefore, about one quarter of our staff are post-docs, post-graduates or apprentices. Altogether, PSI employs 2300 people. 

For the Laboratory of Atmospheric Chemistry at Paul Scherrer Institute we are looking for two

Postdoctoral Fellows in aerosol chemistry

Your tasks

  • Mass spectrometry measurements using aerosol mass spectrometer and extractive electrospray ionization mass spectrometry 
  • Study of health relevance using oxidative potential as a marker for health impact 
  • Statistical source apportionment analysis 
  • Participation in measurement campaigns in Romania 
  • Support of other Postdoctoral Fellows/PhD Students in different campaigns 
  • Publications in impactful journals

Your profile

  • PhD degree in atmospheric science 
  • Proficiency in relevant aerosol mass spectrometry 
  • In depth experience in data analysis and programming (e.g. Python) 
  • Proven successful record in publications 
  • Very good oral and written English skills 
  • Team-oriented working style

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 initially limited to 2 years with potential prolongation.

For further information, please contact Prof. Dr Andre Prevot, Dr Kaspar Daellenbach: andre.prevot@psi.ch; kaspar.daellenbach@psi.ch. 

Please submit your application online by 28 February 2026 (including list of publications and addresses of referees) for the position as a Postdoctoral Fellow (Index-Nr. 5501-25317 & 5503-25705).

Paul Scherrer Institute, Human Resources Management, Mariusz Prus, 5232 Villigen PSI, Switzerland