· Professor Emeritus, The College of New Jersey2024–
· Professor And Associate Chair, The College of New Jersey2017–2020
· Professor And Chair, Department Of Chemistry, The College of New Jersey2008–2014
· Professor Of Chemistry, The College of New Jersey2005–2024
· Director, AMRI, Large Production Site (Organichem)2003–2005
· Director, AMRI2001–2005
· Senior Group Leader, Process Development, Catalytica Pharmaceuticals (later DSM)1999–2001
· Senior Group Leader, Insect Control Synthesis, American Cyanamid1989–1999