Instrument Scientist; f​/m​/d in Ultrafast X-ray Science of Quantum Materials using THz​/mid-IR s

Organisation/Company European XFEL Research Field Physics Chemistry Researcher Profile Other Profession Positions PhD Positions Country Germany Final date to receive applications 1 Feb 2026 - 23:59 (Europe/Berlin) Type of Contract Temporary Job Status Full-time Hours Per Week 39 Offer Starting Date 19 Dec 2025 Is the job funded through the EU Research Framework Programme? Other EU programme Is the related to staff position within a Research Infrastructure?

No

European XFEL is an international non‑profit company located in the Hamburg area in Germany. It operates a 3.4 km‑long X‑ray laser, which produces X‑rays of unique quality for studies in physics, chemistry, the life sciences, materials research and other disciplines. The diverse scientific facilities at European XFEL enable scientists from across the globe to carry out a wide range of experimental techniques.

The Spectroscopy and Coherent Scattering (SCS) instrument provides a unique opportunity to study the ultrafast science of quantum materials using advanced soft X‑ray spectroscopy techniques at a high‑repetition‑rate X‑ray free‑electron laser (FEL) source. The installation and commissioning of a THz and mid‑IR source at the SCS instrument is underway for first user experiments, which are planned for 2026.

To lead and support these efforts, the SCS group is looking for an

• Investigate THz‑/MIR‑driven quantum materials with soft X‑ray spectroscopy and diffraction (XAS, RIXS, XRD)
• Work with Laser group to implement and deliver THz and mid infrared sources
• Set up laser delivery to end stations for user experiments
• Characterise laser pulses at the target position
• Find timing between the optical and X‑ray laser pulses at the beginning of each experiment

• PhD‑degree in experimental physics or chemistry
• Experience in ultrafast material dynamics studies using THz‑/MIR‑ excitations
• Experience with femtosecond lasers
• Experience at large scale facility (e.g. SR, FEL) would be an asset
• Knowledge in UHV and X‑ray spectroscopy would be advantageous
• Strong motivation to participate in SCS user support programme and collaborations
• Strong motivation to develop own research profile in SCS user support programme and collaborations
• Strong motivation in optical laser development in strategic directions for the SCS instrument
• Excellent communication skills and the ability to work in a multi‑lingual, multi‑disciplinary team

Working place will be Schenefeld in the Hamburg metropolitan area. General information on working in Germany, the Hamburg area and the European XFEL can be found here.

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.

Salary and benefits are similar to those of public service organisations in Germany, this includes for example:

• family friendly working environment (e.g. additional childcare days)
• flexible working times and option for work from home depending on tasks
• 30 days of vacation, 24th and 31st of December are free as a courtesy of the employer
• generous company pension scheme (6,45% of monthly salary)
• monthly social events and subsidised company restaurant
• partially financed job‑tickets for public transportation
• extensive training opportunities incl. subsidised English and German language classes
• Easy and free access to a mental health platform to support your wellbeing

Our company language is English.

This position is initially limited to 3 years, with the option to become permanent based on later decision. This position is available as soon as possible.

Please apply online and provide your CV and a motivation letter in English as well as any reference letters.

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