Siegfried is a research scientist at the University of Washington and Asteroid Institute collaborator. After completing his PhD thesis on the subject of the habitability of terrestrial planets in binary star systems at the Institute for Astrophysics of the University of Vienna, Austria, Eggl moved to Paris, France, in 2013. There, he worked as a post-doctoral research associate at the Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) in planetary defense. In 2016, Dr. Eggl accepted a research appointment at the NASA Jet Propulsion Laboratory, California Institute of Technology in Pasadena and is now a research scientist at the University of Washington.