European XFEL is an international non-profit company locatedin the Hamburg area in Germany. It operates a 3.4 km-long X‑raylaser, which produces X‑rays of unique quality for studies inphysics, chemistry, the life sciences, materials research and otherdisciplines. The diverse scientific facilities at European XFELenable scientists from across the globe to carry out a wide rangeof experimental techniques. The EuXFEL "Strategy 2030+" identifiesvarious development programs, which are ongoing or about to start,aiming at short- to mid-term enhancements to current capabilitiesand user experience. It also foresees programs, with the purpose ofdeveloping or qualifying technology for a facility upgrade duringthe next decade. This upgrade will bring advanced X‑ray photondelivery modes, a higher number of pulses per second on sample andattosecond X‑ray pulses, to name a few features. The data servicesof the facility will need to evolve alongside to accommodate andprepare for these developments. At the same time, efforts toimprove the user experience (UX) of some of these systems havestarted. In particular, for the development of enhanced WebInterfaces to EuXFEL’s control system, Karabo, we are looking for aFullstack Application Developer (f/m/d) – Python/React ThePosition * Support the team in developing and maintaining theEuXFEL Karabo SCADA Web applications * Ensure and contribute tocode quality by providing unit and integration tests * Help definethe architecture of web developments for our SCADA system, frombackend to frontend towards full applications in a scientificenvironment * Support the operational responsibilities (DataOperation Center, On Call) of the Data Department Requirements *Bachelor or higher degree in Computer Science or a similartechnical field of study (e.g. Engineering, Physics or Mathematics)or equivalent professional experience * Good knowledge ofTypeScript/JavaScript and working knowledge of the React webframework and HTML/CSS is mandatory * Good knowledge in Python andFastAPI is mandatory * Proven background in user experience (UX)design, e.g. optimization of applications for usability * Workingknowledge with versioning systems like Git and their integrationinto CI/CD processes * Experience with relational databases MySQLor PostgreSQL * Good knowledge of the Qt library (PyQt) isconsidered an asset * Experience with MUI (Material UI) componentsis considered an asset * Good command of English as a workinglanguage is a must For additional information, please contactDennis Göries([dennis.goeries@xfel.eu](mailto:dennis.goeries@xfel.eu)). Workingplace will be Schenefeld, in the Hamburg metropolitan area. Generalinformation on working in Germany, the Hamburg area and theEuropean XFEL can be found [ Website. Our offer Become part of avibrant international and multicultural team of scientists,engineers, technical and administrative staff. Be involved incutting edge scientific and technical progress and participate inour international networks. Experience our atmosphere of toleranceand respect. Salary and benefits are similar to those of publicservice organizations in Germany, this includes for example: *family-friendly working environment (e.g. additional childcaredays) * flexible working times and option for work from homedepending on tasks * 30 days of vacation, 24th and 31st of Decemberare free as a courtesy of the employer * extensive relocationbenefits * generous company pension scheme (6,45% of monthlysalary) * monthly social events and subsidized company restaurant *partially financed job-tickets for public transportation *extensive training opportunities incl. subsidized English andGerman language classes * easy and free access to a mental healthplatform to support your wellbeing Our company language is English.*Reference number: E-384* *Duration:* This appointment is limitedto 3 years. Application Please apply [ Website and provide your CVand a motivation letter in English as well as any referenceletters. The European XFEL GmbH is an equal opportunity andaffirmative action employer and we promote and support diverse andheterogenous teams. Applicants with disabilities will be givenpreference over other equally qualified applicants. [ Apply Website* Deadline: 12 May 2025* European XFEL GmbH Holzkoppel 4, 22869Schenefeld, Germany Website