The Star Group has hired 10 new staffers, bringing its total head count to 147. New arrivals include Tracy Seng, who joins the Cherry Hill, N.J., agency as vice president and account director. She most recently was an account director at Gillespie McCann Erickson Worldgroup in Princeton, N.J. Also joining Star Group is Greg Benedetti, who will be vice president of promotions. Benedetti most recently served as sales and marketing manager at UPN 57 WPSG-TV in Philadelphia. Mike Mielcarz, a former art director at Red Tettemer in Philadelphia, has assumed the same post at Star Group.