Low-level RF Engineer

• 01 September 2026
• 100%
• Indefinite duration
• Villigen PSI

Paul Scherrer Institute PSI is the largest research institute for natural sciences and engineering sciences in Switzerland. We conduct cutting-edge research in the fields of future technologies, energy and climate, health innovation, and the foundations of nature. By conducting fundamental and applied research, we work on sustainable solutions to the great challenges facing society, science, and the economy. PSI is committed to training future generations. Thus, approximately one quarter of our staff consists of post-doctoral researchers, doctoral students, or apprentices. In total, PSI employs 2300 people.

For our LLRF group in the Radiofrequency section, we are looking for a

Your tasks

• Design and develop advanced control algorithms for multi-bunch operation in traveling wave RF structures, focusing on 4-bunch schemes for FCC-ee and experimental validation using 2-bunch configurations on SwissFEL
• Perform modeling and simulation of RF systems and beam acceleration to support the development of control strategies and operational studies
• Create automation tools to efficiently configure, optimize, and stabilize multi-bunch beam operation
• Contribute to LLRF systems engineering, translating user requirements into an integrated hardware, firmware, and software architecture
• Support and acquire practical experience in the operation and optimization of the SwissFEL LLRF system

Your profile

• Master or PhD in physics, electrical engineering, computer science, or a related field
• Strong background in closed-loop control theory and complex systems automation
• Fundamental knowledge of beam dynamics in linear accelerators
• Experience with LLRF systems or EPICS-based control systems is an asset
• Proficiency in Linux environments and programming (e.g., Python, MATLAB); experience with FPGA firmware is a plus
• Familiarity with system and/or software engineering practices is advantageous
• Demonstrated problem-solving skills, a practical approach, and excellent command of English

We offer

Our institution relies on interdisciplinary, innovative, and dynamic collaboration. You will benefit from systematic on-the-job training, in addition to opportunities for personal development and our pronounced culture of professional training. If you wish to best balance work, family life, or other personal interests, we can support you through our modern employment conditions and on-site infrastructure.

The employment contract will initially be limited to 2 years, with a possible extension for a third year.

For more information, please contact Zheqiao Geng, telephone +41 56 310 40 19.

Please submit your application online before 29 September 2026 for the low-level RF engineer position (Index-Nr. 8417-29178).

Paul Scherrer Institute, People & Culture, Mikela Szolansky, 5232 Villigen PSI, Switzerland

www.psi.ch