It sounds to me that if your car had no pull before the brake job and has pull after then the brake job created some sort of problem. In my experience wheel pull comes from the wheels not tracking in line with the centerline of the frame. There should be no reason for the brake mechanic to mess with the tie rod adjustments but stranger things have happened. Maybe he jacked the front of the car up with a floor jack and jacked on the tie rod by mistake. this can bend the rod and cause one wheel to toe out.

Tell the mechanic that the car pulls and that you want it aligned by a qualified alignment co. He should agree to pay the bill. If he doesn't agree alignments are only $50 and this will tell you the integrity of your brake man.