Job Description

Your tasks

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Develop, maintain and support the high-level measurement orchestration software for experiments at the Swiss Light Source (SLS): BEC (Beamline Experiment Control) and the BEC Widgets GUI framework Enable time-critical experiments by supporting scientists before, during, and after measurements in using, extending and integrating new functionalities into the existing system Act as translator and facilitator between scientists and specialists across a wide range of disciplines bridging gaps in terms of collaborative discussions and code development Contribute expertise to ongoing and future projects by improving GUIs, tools and libraries, including upstream open-source projects Collaborate closely with scientists and expert groups across PSI as well as colleagues from other national and international institutions

Your profile

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PhD degree in natural science, computer science, engineering or mathematics, or equivalent professional experience Proven expertise in developing high-quality scientific-software solutions in Python, following best practices (version control, CI/CD, testing, documentation) Experience with GUI toolkits (especially Qt), intuitive GUI/UX design and web-app development using modern frameworks Previous exposure to large-scale control systems (especially EPICS) and hardware integration therein Interest in AI tooling for software engineering and development workflows Willingness to occasionally travel to workshops and conferences, as well as flexibility in working hours if required by project deadlines or incident response Strong communication skills, team-oriented mindset, fluent in English (spoken and written), and speaking German or willingness to learn

We offer

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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.

This is a permanent position.

For further information, please contact Sven Augustin, sven.augustin@psi.ch.

Please submit your application online by

8 February 2026

for the position as a Software Scientist / Research Software Engineer (Index-Nr.7901-25888).

Paul Scherrer Institute, Human Resources Management, Adrian Kirsch, 5232 Villigen PSI, Switzerland