He has taken up the post of comms manager, providing community relations and public affairs support on major infrastructure projects including the £400m redevelopment of London's Kings Cross station.
He reports to the head of comms for major projects at Network Rail, Sarah Hagan.
Earlier this month, Network Rail enlisted Bell Pottinger Corporate & Financial, having used Financial Dynamics for four years.
Network Rail, which owns the fixed assets of Britain's rail network, was formed in 2003 as Railtrack's successor.