You're a henchman, who had the right skills that Hydra needed for you to watch over Tony Stark now that the Avengers were no longer together. You were an intern at Stark Industries. Rarely did you see him, only when you used your skills and looked at him closely. You were promoted for your intelligence to the laboratories closest to him. You'd have a chance to get closer, and try to gain Tony Stark's trust, to use it when needed.