Postdoctoral Fellow in Time-resolved and Room-temperature Crystallography

EPFL CED Centre d'Employabilité et de Développement / Employability and Development Center; Moyen; On-site; EUR 120,000 - 142,000; Full time

Job summary

Paul Scherrer Institute (PSI) in Switzerland is seeking a Postdoctoral Fellow in Time-resolved and Room-temperature Crystallography. You will implement time-resolved experiments, apply methods to dynamic enzymology, and establish serial crystallography workflows for dynamic studies.

The role involves data collection, analysis, publication, and collaboration with external users. The position is limited to 2 years with a potential 1-year extension; start date by agreement.

Qualifications

• PhD in a relevant field as stated.
• Hands-on experience in macromolecular crystallography from data collection to structure refinement.
• Experience in serial and/or time-resolved crystallography at synchrotrons or XFELs.
• Interest in method and instrumentation development and teamwork at a large-scale facility.
• Very good written and spoken English.
• Desirable: protein production, (micro)crystallisation, reaction initiation, or enzyme kinetics.
• Desirable: Python programming and serial data-processing software.

Responsibilities

• Implement and run time-resolved experiments using picoliter injector and pump-probe schemes.
• Apply methods to dynamic structural enzymology to capture intermediates and conformational changes.
• Establish SSX workflows on cryo-compatible fixed-target chips for dynamic studies.
• Characterize X-ray-induced heating and radiation damage at room temperature; derive data-collection protocols.
• Publish results in peer-reviewed journals and present at international conferences; support external users.

Skills

Macromolecular crystallography

Time-resolved crystallography

Serial crystallography

Python programming

Data analysis

Education

PhD in structural biology/biophysics/biochemistry/chemistry/physics or related field

Tools

CrystFEL

XDS

X-ray data processing

Job description

Lieu de travail

Villigen PSI

Position Details

• Paul Scherrer Institut
• 100%
• Académique: Post-doctorant
• Moyen-Pays (SO, AG)

Description

The Paul Scherrer Institute PSI is the largest research institute for natural and engineering sciences in Switzerland. At PSI, we conduct cutting-edge research in the fields of future technologies, energy and climate, health innovation and fundamentals of nature. Through basic and applied research, we work on sustainable solutions for central questions from society, science and the economy. Training young people is a central concern of PSI. For this reason, around a quarter of our employees are postdocs, doctoral students or apprentices. Altogether, PSI employs 2300 people.

Our group operates the three macromolecular crystallography beamlines of the Swiss Light Source SLS, recently upgraded to the fourth-generation SLS 2.0, as well as the Cristallina-MX endstation at the X-ray free-electron laser SwissFEL. In a new project, we are developing “Cryo2RT” approaches that combine the robustness of cryogenic sample preparation, shipping and beamline automation with room-temperature, multi-temperature and time-resolved crystallography, to make dynamic structural biology accessible on standard MX beamlines.

For the Macromolecular Crystallography group in the Center for Photon Science we are looking for a Postdoctoral Fellow in Time-resolved and Room-temperature Crystallography.

Your tasks

• Implement and run time-resolved experiments: substrate / ligand droplet mixing with a picolitre injector and microsecond pump-probe experiments (laser-induced temperature jump, photocaged compounds) using the JUNGFRAU detector
• Apply these methods to dynamic structural enzymology to capture reaction intermediates and conformational changes
• Establish serial synchrotron crystallography SSX workflows on cryo-compatible fixed-target chips (e.g. IMISX, MISP-chip) for dynamic studies
• Characterise X-ray-induced heating and radiation damage at room temperature on micro-to millisecond time scales and derive data-collection protocols
• Publish results in peer-reviewed journals, present them at international conferences and support external users and collaborators

Your profile

• PhD degree in structural biology, biophysics, biochemistry, chemistry, physics or a related field
• Hands-on experience in macromolecular crystallography, from X-ray data collection and processing to structure determination and refinement
• Experience in serial and/or time-resolved crystallography at synchrotrons or XFELs
• Strong interest in method and instrumentation development and enjoyment of working in an interdisciplinary team at a large-scale research facility
• Very good written and spoken English
• Desirable: experience with protein production and (micro)crystallisation, reaction initiation (mixing, laser pump-probe, T-jump) or enzyme kinetics
• Desirable: programming skills (e.g. Python) and experience with serial data-processing software (e.g. CrystFEL, XDS) or radiation-damage studies

We offer

Our institute is based on interdisciplinary, innovative and dynamic collaboration. In addition to a systematic induction, you will benefit from individual development opportunities and our pronounced culture of further education. We support you with modern employment conditions and on-site facilities to help you reconcile work with family life or personal interests.

The position is limited to 2 years, with the option of a 1 year extension. Starting date: by agreement.

Contact

For further information, please contact Dr Guillaume Gotthard, phone [phone] or Dr Meitian Wang, phone [phone].

We look forward to receiving your online application, including a list of publications and contact details of two referees, by 10 January 2027 for the position as a Postdoctoral Fellow (index no. 6121-29365).

Paul Scherrer Institute, People & Culture, Mariusz Prus, 5232 Villigen PSI, Switzerland