Rachel Whetstone, who stepped down as VP-communications and public policy at Uber in April, is joining Facebook in September in charge of PR for its WhatsApp, Instagram and Messenger products.

She will report to Caryn Marooney, VP-global communications.

Rachel WhetstoneRachel Whetstone

Whetstone joined the car-sharing company in 2015, replacing former Obama advisor David Plouffe.

Facebook CEO Mark Zuckerberg recruited Plouffe in January to run the Chan Zuckerberg Initiative, social advocacy organization. CZI was formed by Zuckerberg and his wife, Chan, to give away most of their FB stock to groups that "advance human potential."

Before Uber, Whetstone did a ten-year stint at Google, where she handled PR and the search engine's relations with the European Union and Federal Trade Commission.

The UK native began her career in Conservative Party politics, advising then-Home Secretary Michael Howard.

She left for jobs at One2One and Portland PR before returning to counsel Howard when he became leader of his party.