Ryan will be responsible for creative output across the group’s businesses, which include Karmarama, the data business Crayon Ci and the production agency Kream.
She will report to the group chief creative officer, Dave Buonaguidi, and work alongside Karmarama’s new executive creative directors, Sam Walker and Joe De Souza.
Ryan has been at Proximity since 1998 and the executive creative director since 2005. She was behind the "mission control" work for Procter & Gamble, which won three golds at 2012’s DMA Awards.
Karmarama created Karma Communications when it acquired The Crayon Group in January last year, adding 140 staff to the business.
Ryan is expected to join the company towards the end of the summer.