Duty engineer
Duty engineer was an engineering officer in Starfleet who acted as the duty officer when the chief engineer was off-duty. 

On the , in 2367, the duty engineers for the third shift were MacDougal and Leland T. Lynch. ()

In 2369, Chief Engineer Geordi La Forge requested a display of the Engineering Department Duty Roster for the next three days. The names of duty engineers for each of the duty shifts were listed in this roster. ()
Military
Occupations