After the award of his doctorate, Pick was appointed as an assistant to Ernest Mach at the Karl-Ferdinand University in Prague. Mach had moved from Graz, where he was professor of mathematics, to Prague in 1867 to take up the chair of physics there. He, like Pick, had studied at the University of Vienna and, by the time Pick became his assistant, he was regarded as one of the leading scientists in Europe. Pick now aimed at becoming a lecturer in Prague and in order to obtain the right to lecture he had to write an habilitation thesis.
Pagkatapos ng award ng kanyang mga titulo ng doktor, Pumili ay hinirang bilang isang assistant sa Ernest Mach sa Karl-Ferdinand University in Prague. Mach ay inilipat mula sa Graz, kung saan siya ay propesor ng matematika, sa Prague sa 1867 upang kunin ang upuan ng physics doon. Siya, tulad Pumili ng, had-aral sa Unibersidad ng Vienna at, sa pamamagitan ng mga oras ay naging Pumili ng kanyang assistant, siya ay regarded bilang isa sa mga nangungunang siyentipiko sa Europa. Pumili ng ngayon at naglalayong maging isang lektor sa Prague at upang makuha ang karapatan sa panayam niya na magsulat ng isang habilitation sanaysay.