Greenfield, who starts at the consultancy this week, joined Airside from Proud Creative, where he was senior designer. Previously Greenfield worked for BB Saunders, where he was acting creative director.
Airside selected Greenfield because of both his strategic background and his experience in a wide range of projects, such as branding, illustration, animation and TV idents, says Greenfield.
Greenfield will join fellow creative directors Alex Maclean and Fred Deakin, who founded the business with managing director Nat Hunter in 1998.
The appointment will allow Maclean and Deakin to focus more on the digital aspects of the consultancy as it develops its cross-platform offer, says Greenfield.