European XFEL is an international non profit company located in the Hamburg area in Germany. It operates a 3.4 km long Xray laser, which produces Xrays 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 EuXFEL "Strategy 2030+" identifies various development programs, which are ongoing or about to start, aiming at short to mid term enhancements to current capabilities and user experience. It also foresees programs, with the purpose of developing or qualifying technology for a facility upgrade during the next decade. This upgrade will bring advanced Xray photon delivery modes, a higher number of pulses per second on sle and attosecond Xray pulses, to name a few features. The data services of the facility will need to evolve alongside to accommodate and prepare for these developments. At the same time, efforts to improve the user experience (UX) of some of these systems have started. In particular, for the development of enhanced Web Interfaces to EuXFELs control system, Karabo, we are looking for a Fullstack Application Developer (f/m/d) Python/React The Position * Support the team in developing and maintaining the EuXFEL Karabo SCADA Web applications * Ensure and contribute to code quality by providing unit and integration tests * Help define the architecture of web developments for our SCADA system, from backend to frontend towards full applications in a scientific environment * Support the operational responsibilities (Data Operation Center, On Call) of the Data Department Requirements * Bachelor or higher degree in Computer Science or a similar technical field of study (e.g. Engineering, Physics or Mathematics) or equivalent professional experience * Good knowledge of Ty