The successful candidate will be member of the Systems Engineering Team. The SAFARI Systems Engineering Team is an international team consisting of experts within different disciplines. This team leads the development of the SAFARI Instrument, defines the requirements, and collaborates with development teams across Europe, US and Taiwan. The main task of the candidate will be to analyze the overall end-to-end instrument performance, with an emphasis on the effects of detector behavior on the overall science data calibration. Important aspects for this are detector non linearity, temporal response, effects of thermal drift and impact of cosmic rays. Besides this task the candidate will also contribute to other thermal, electrical and optical issues of the instrument that have to be addressed within the Systems Engineering Team during the phase A study.