After several years in practice as an Interior Designer and Lighting Designer, Professor Ritter became a full-time educator. He established the Interior Design Program at Cazenovia College in 1980. Since then he has continued to practice as a Design and Lighting consultant. His diverse lighting projects include: theatrical production, historic preservation, architectural, interior and landscape applications. He has also created and taught CEU accredited courses in Lighting and Computer-aided Modeling for the Illumination Engineering Society of North America (IESNA) and The American Society of Interior Designers (ASID). He has been an Educational Member of ASID since 1980 and a Professional member of IESNA since 1993. He is a member of the 1824 Society at Cazenovia College.