Internship/ Master’s Thesis (2026-2027) Mechanical loss characterisation of a large monocrystalline silicon test mass at cryogenic temperatures for E-TEST FACSA students: Job teaser Design and operation of high-resolution rotation sensors for vibration isolation of gravitational wave detectors FACSA students: Job teaser Design and construction of a high-amplitude ground shaker for the generation of a gravity signal on the E-TEST prototype FACSA students: Job teaser