Jones left Sky to join the agency Osborne & Partners last year. He then took a job with current Prime Minister Theresa May when she was still home secretary, in May. He left May's team when she entered Downing Street in July, although it had been reported in places that he would retain a role.
He will now lead the development of Weber Shandwick’s public affairs offer as the UK prepares for Brexit and the Prime Minister’s new cabinet implements a range of reforms, and said: "My main focus will be working to develop Weber Shandwick’s public affairs offer as part of the company’s national and international network of integrated communications services."
He will start next week at the world's second-largest PR firm.
Jon McLeod, chairman of corporate financial and public affairs at the agency, said Jones "brings precisely the mix of skills that Weber Shandwick is renowned for, as political communications embrace the multi-channel age".
He said: "His understanding of the new political environment, together with his acuity in real-time written broadcast communications, will consolidate our position at the cutting edge of public affairs practice."
Jones spent most of his journalistic career at Sky News, starting as a freelance reporter in 1999. He joined the Westminster team in 2006 and then became deputy political editor in 2010.