Tabtabai was most recently an interactive CD at Modernista! Boston and worked on Palm, Cadillac and (RED). Before that, he served as an interactive AD at Crispin, Porter + Bogusky, where his client credits included VW, Domino's, Coke Zero and Microsoft. He will be working on the Pepsi account.
Bletterman will be a creative director on Gatorade and had previously worked at Momentum, N.Y. and R/GA, N.Y. He had also worked in Amsterdam for three years on the client side as the Global Interactive Marketing Director for adidas International.
Former R/GA London senior interaction designer Kathrin Hoffman is also joining the agency in the same role. At R/GA her client list included Nike, Nokia, John Lewis and Alfa Romeo. She had also worked as an information architect/producer at de-construct, Complete Integrated and IMG London.
Director Garth Jennings has joined the roster of Hello! for music video representation.