Technician

The technician is encountered during the mission Dossier: The Convict aboard the Purgatory in Mass Effect 2.

Overview
Once Warden Kuril springs his trap on Shepard, the firefights begin. At the end of the hall in the room, right before you release Jack is where the technician is waiting for you. As he frantically requests aid, he is killed by Shepard and his squad.

Tactics
Technicians are very weak as they have no shields or armor and only wield a pistol. A short burst from an assault rifle or one shot from a shotgun and the technician is down.