Jan Hartmann has worked at Oper Frankfurt since 1999 and became a Beleuchtungsmeister (lighting master) in 2010. During the 2015/16 he lit three new productions: Fioravanti's Le cantatrici villane, Das schlaue Füchslein/The Cunning Little Vixen and the Pierrot lunaire / Anna Toll (world premiere) double bill and in 2016/17 he is lighting designer for the new productions of Rigoletto and Mozart's Betulia liberata. The first production he lit at Oper Frankfurt was Neunzehnhundert/Nineteenhundred in 2011. This was followed by Tilimbom, Idomeneo, Das Spiel von Seele und Körper, Orpheus, Der goldene Drache/The Golden Dragon, An unserem Fluss/By Our River and Julietta. Projects at other opera houses and theatres have included the Balthasar Neumann Ensemble Festa Teatrale Carneval in Hong Kong, for the choreographer Deborah Hay As Holy Sites Go and Verdi's Falstaff at the Nationaltheater in Mannheim. Jan Hartmann has also been working as a professor for lighting design at the Hochschule für Gestaltung in Offenbach since 2013.