In 2353, he was listed as a Starfleet Operational Support Services officer on a directory placard in Starbase 32, Maxia sector. His office was located in room #75274. (TNG: "Violations" , directory) In 2367, he was a lieutenant aboard the USS Enterprise-D. According to the Engineering Division duty roster, he was an Ops Engineer for the Third Shift Antimatter Operations Unit. This roster was on display via the desktop monitor in the ready room. (TNG: "Suddenly Human" , okudagram) In 2372, he was listed on the Planetary Geosciences Division duty roster. (VOY: "Parturition")