PhD student (f/m/d) in Theoretical and Computational Physics - part-time (29,25 hrs/week)

Organisation/Company European XFEL Department Theory Research Field Physics » Computational physics Physics » Mathematical physics Researcher Profile First Stage Researcher (R1) Positions PhD Positions Application Deadline 23 Nov 2026 - 23:59 (Europe/Berlin) Country Germany Type of Contract Temporary Job Status Part-time Hours Per Week 29,25 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Reference Number S-685 Is the Job related to staff position within a Research Infrastructure? No

Offer Description

The Position

• Develop and apply rotational-invariant methods for x-ray scattering and single-particle imaging at XFELs, with a focus on biological and nanoengineered particles
• Advance theoretical and computational approaches for extracting and analyzing angular cross-correlation functions and rotational invariants in x-ray scattering
• Analyze and interpret experimental XFEL datasets—primarily from the European XFEL—and participate in relevant beamtimes and collaborative research projects with internal and external user groups
• Contribute to the development of in-house software for invariant-based structural analysis and disseminate research results through scientific publications, conference presentations, and a PhD thesis.
• A master’s degree in physics or a related discipline
• A strong background in mathematics
• Programming skills (Python or C/C++ will be considered an asset)
• Proficiency in spoken and written English
• Strong communication skills and an interest in collaborating with experimentalist and theorists

Level Excellent

Additional Information

Become part of a vibrant international and multi-cultural team of scientists, engineers, technical and administrative staff. Be involved in cutting edge scientific and technical progress and participate in our international networks. Experience our atmosphere of tolerance and respect.

Work-life balance & flexibility

• A family-friendly working environment (e.g. additional childcare days)
• Flexible working hours and options to work from home (depending on your role and tasks)
• 30 days of paid vacation, plus December 24th and 31st off (granted by the employer)

Compensation & long-term security

• Transparent compensation aligned with public service organizations in Germany
• PG 13/1 with 3,676.28€ (75% position), here is the link to the current valid tariff table
• Depending on the pay group, we offer an annual special payment of 75-95% of one month’s salary.
• Partially funded public transportation Deutschlandticket
• Generous company pension scheme (6.45% of your monthly salary)

Support from day one

• Extensive relocation benefits to help you settle in smoothly
• English as company language, enabling easy collaboration in our international environment
• Extensive training opportunities, including subsidized English and German language courses
• Subsidized sports membership with access to over 7,000 sport clubs
• Monthly social events and company restaurant with employee discounts
• Free access to a professional mental health support platform

Selection process

The European XFEL GmbH is an equal opportunity and affirmative action employer and we promote and support diverse and heterogenous teams. Applicants with disabilities will be given preference over other equally qualified applicants.

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