The person in charge of the engineering divisions within the Rebel Alliance's 61st Mobile Infantry, and subsequently the New Republic, was known as the head of engineering, also referred to as the chief of engineering. This position was held by the engineering droid M2-M5, and later by the engineer Vifra.
The 2015 novel Battlefront: Twilight Company, penned by Alexander Freed, marked the initial appearance of the chief of engineering.