Julia Masters was the Chief Financial Officer of REPCONN Aerospace.
She and Leonard Steeple fought against Poseidon Energy to stop them from buying REPCONN out. However, when RobCo Industries put in an offer, and Steeple asked for her help once more, she worked against him, leading to the board of executives calling a vote of no confidence on their Vice President. REPCONN was then acquired by RobCo.
However, there was more to Masters than meets the eye. She was, in reality, a triple agent. Allying with Piers Isley to sell REPCONN to RobCo was not the only betrayal she made. After 2075, when REPCONN was acquired, she became a mole for Poseidon Energy, leaking information about her company's Matter Modulator plasma rifle project. When the project produced the first working prototype, she was requested to intercept it on its way to the Department of Defense.
Julia Masters is mentioned only in Fallout: New Vegas.