Pavlik

From Memory Alpha, the free Star Trek reference.

Ensign Pavlik was a Starfleet engineer that served aboard the USS Enterprise-D in the 2360s.

She was working in engineering during Dr. Leah Brahms' visit in 2367 and assisted Dr. Brahms in modifying the Enterprise's engines. She later assisted in various attempts to get rid of a spaceborne organism known as "Junior" off of the ship. (TNG: "Galaxy's Child")

Ensign Pavlik was played by Jana Marie Hupp, who later returned as Lieutenant Monroe.