Shields, who was most recently president of people platforms at AOL, will take on the role of vice-president of business development and sales for Europe at Facebook. She will attempt to further build the Facebook brand in Europe in her new role.
Her appointment comes as current European commercial director Blake Chandlee shifts focus. He has been appointed to vice-president of sales for emerging markets for Eastern Europe, Asia Pacific and Latin America.
Previously Facebook's top employee in Europe, Chandlee will attempt to publicise the Facebook brand in emerging markets as he has already done with the social network in Europe.
In her role at Bebo, Shields was headquartered in London and she will return to the UK to take on the Facebook role.