Andre Prevot

The Paul Scherrer Institute (PSI), Switzerland's largest research institute for natural and engineering sciences, is seeking two Postdoctoral Fellows in aerosol chemistry for its Laboratory of Atmospheric Chemistry. PSI is renowned for its interdisciplinary research in future technologies, energy and climate, health innovation, and the fundamentals of nature, with a strong commitment to training future generations of scientists. The institute employs over 2300 staff, including a significant proportion of post-docs and post-graduates, fostering a dynamic and collaborative environment. The successful candidates will engage in mass spectrometry measurements using aerosol mass spectrometers and extractive electrospray ionization mass spectrometry. Research will focus on the health relevance of aerosols, utilizing oxidative potential as a marker for health impact. Statistical source apportionment analysis and participation in measurement campaigns, including fieldwork in Romania, are integral components of the role. Fellows will also support other postdoctoral researchers and PhD students in various campaigns and contribute to impactful scientific publications. Applicants must possess a PhD degree in atmospheric science, demonstrate proficiency in aerosol mass spectrometry, and have substantial experience in data analysis and programming (preferably Python). A strong publication record and excellent English communication skills are required, alongside a team-oriented working style. PSI offers an initial two-year employment contract with the possibility of extension, modern employment conditions, and comprehensive on-site infrastructure. The institute provides systematic training, personal development opportunities, and supports work-life balance. Applications should be submitted online by 28 February 2026, including a list of publications and addresses of referees. For further information, candidates may contact Prof. Dr Andre Prevot or Dr Kaspar Daellenbach via email. More details and the application portal are available at PSI's website.

The Paul Scherrer Institute (PSI) is advertising a PhD Student in Aerosol Chemistry within the Laboratory of Atmospheric Chemistry in Switzerland. PSI is the largest research institute for natural and engineering sciences in the country and offers an interdisciplinary research environment focused on future technologies, energy and climate, health innovation, and fundamental science. The project centres on aerosol chemistry and atmospheric measurements, with work that includes ^14C analysis, aerosol mass spectrometer analyses of filter samples collected in eastern Europe and Asia, and development of new methanol extraction workflows. The doctoral researcher will also contribute to source apportionment of organics and elemental carbon across different regions, carry out offline measurements at PSI and the University of Bern, support other laboratory projects, publish in high-impact journals, and write a PhD thesis for ETH Zurich. Applicants should hold a Master's degree in Atmospheric Science or a closely related field. Laboratory experience is beneficial, and the role requires strong programming and data analysis skills, very good written and spoken English, and a collaborative team-oriented approach. The position is suited to candidates interested in analytical and environmental chemistry, atmospheric aerosols, and computational data analysis. The post is based at PSI in Villigen, Switzerland, with collaboration involving the University of Bern and ETH Zurich. The application deadline is 5 August 2026. Interested candidates should apply online using the provided application portal. For further information, contact Dr Kaspar Dällenbach or Prof. Dr Andre Prevot via email.

The Laboratory of Atmospheric Chemistry at the Paul Scherrer Institute (PSI) is seeking a Postdoctoral Fellow in Aerosol Chemistry. PSI is Switzerland’s largest research institute for natural and engineering sciences and offers an interdisciplinary, innovative environment with strong training and development support. The position focuses on advanced aerosol and atmospheric chemistry research, including operation of mass spectrometers such as AMS, online Orbitrap-MS, VOCUS-PTR, and MIPTOF. The postdoc will conduct ambient measurements in polluted areas, perform source apportionment and process investigations, and contribute to chamber and flowtube experiments with an emphasis on solid fuel combustion and mixed-source experiments. The role also includes publication of results in high-impact journals and support/co-supervision of other postdoctoral fellows and PhD students during research campaigns. The successful candidate will join a collaborative laboratory environment at PSI and contribute to research addressing fundamental and applied problems in atmospheric chemistry and environmental science. Applicants should hold a PhD in Atmospheric Science, ideally with postdoctoral experience, and be proficient in aerosol mass spectrometric methods. Strong data analysis and programming skills, especially in Python, are required, together with a solid publication record, excellent English, and a team-oriented mindset. The contract is initially for two years with the possibility of extension. Applications must be submitted online by 5 August 2026, including a list of publications and referee contact details. For further information, candidates may contact Prof. Dr Andre Prevot at [email protected].