Gamma-Ray Bursts are the aftermath of the catastrophic death of a star, and signify the formation of a black hole. As part of the Swift and Fermi/GBM satellite teams, and with our PI-instrument GROND at the 2.2m telescope in Chile, the High-Energy group of the Max-Planck-Institute for Extraterrestrial Physics offers a 3-yr PhD position which will be geared towards various tests of the fireball scenario describing the afterglow emission. This will allow to derive the emission properties of GRB jets, but also determine the GRB environmental properties. Occasional travels for observing runs to Chile are part of the thesis. The successful applicant will be supervised by J. Greiner (firstname.lastname@example.org), and will work within a diverse and vibrant team of young scientists with experience over a broad range of observing domains and topics. The contract (TVöD 13/2) will be for 3 years and upon successful completion the candidate will be awarded the doctoral degree in physics of the Technische Universität of München (TUM). Applicants must have an equivalent of a master's degree in astronomy or physics at the start of the studentship, and a basic knowledge of programming is essential. Interested candidates should send their CV, two recommendation letters and a summary of previous research activities (~1 page) to email@example.com. The Max-Planck Society is an equal opportunity employer and women and minorities are encouraged to apply.