She will manage relationships with big-name clients including McDonald's, Sony Ericsson and AB InBEV. as well as using her experience to advise clients' new and existing campaigns based on the 2012 Olympics. She will be based in London in her new role.
Aiello moves over from the IOC, where she was manager for partnerships and responsible for looking after four of the 2012 Olympics' nine main sponsorships deals, including Coca-Cola and McDonald's.
Aiello previously worked on marketing and advertising campaigns for Proctor & Gamble, Dentsu and Beacon Communications.
Paul Kingsley, CEO of RPMC Europe, said: 'Vanessa's appointment will help ensure that we continue to develop a first class service for our clients, at a time when they are looking for increased cost efficiencies and enhanced returns on their marketing and sponsorship investment.'