Shaw joins next week in the newly created role of chief creative officer and will oversee the agency’s Centre of Creative Excellence in London.
The new hub is expected to be followed by similar offerings in both the US and China as the agency shifts to focus on driving "bigger, channel-neutral ideas" internationally.
Shaw joins H+K after a year at Good Relations and eight years with Exposure, which during his time won three Cannes Lions awards for work with Umbro and Dr Martens.
He will be working alongside H+K’s UK CEO and global chair of creative strategy Richard Millar, whom he first met while judging at the Cannes Festival of Creativity in 2011.
Shaw said: "We talk about the role of creativity within our business but, having known Richard for a few years I felt like this is the kind of role where I could truly make a difference within the industry. Working alongside him I think we have the ability to really create momentum and push the creativity agenda forward."
Good Relations said it was in the "advanced stages" of replacing Shaw.