Brun found himself appointed to teach at the Richelieu Lyceum in 1832, where he developed a keep interest in archeology as a member of the Odessa Society. The Archeological Commission appointed him to work on Herodotus’s Scythia, and he ultimately earned th Uvarov Prize for his studies of the Black Sea. He had a position at one time in the Ministry of Finance, and also at the Vitebsk and Dinaburg Gymnasia.