At Proximity Hughes was a managing partner, responsible for the worldwide Shell account.
William Makower, managing director at Panlogic, said: "Panlogic is growing on the back of continued digital development and organic growth. David brings not only significant agency experience but a proven ability to grow an agency business by developing and building on client relationships."
Hughes will also be responsible for bringing his experience and knowledge to bear in developing Panlogic's growing client business.
Hughes added: "It's a great time to be joining Panlogic. They have a strong heritage in pure play digital marketing and a real specialism in social media. I'm looking forward to using my background in client service and business development to develop some ambitious plans for our clients and to take Panlogic to the next level."
Panlogic began in 1999 and has a wide range of both private and not-for-profit clients including Sky, ITV and L'Oreal.