Atkins road chief Philip Hoare has been switched to cover rail as the firm bids to grow its share of that sector.
Hoare, previously head of UK highways and transportation, will become managing director of UK rail.
This will allow Douglas McCormick, who currently heads up UK rail, to focus on international opportunities in the sector.
Atkins is understood to be developing a clear vision for the worldwide rail sector ahead of the Innotrans 2014 trade fair, which will take place in Berlin in September.
UK and Europe chief executive David Tonkin said: “The UK and international infrastructure markets, in particular rail, continue to be seen as vital to economic growth as well as improving people’s lives.
“We have many talented people with great experience and skills working on projects across the world and we want all our clients to benefit from this broader capability. I am confident that Douglas and Philip will help us achieve this.”
Operations and commercial director David Jenkins will look after UK highways and transportation in the short-term.
Atkins earlier this year sold its highways services business to Skanska for £18M.