Paul Farbrace is leaving his position as England's assistant coach to take Ashley Giles' old job in charge of Warwickshire.
Farbrace has been an influential backroom figure with the national side over the past five years and was set to play a major role in the forthcoming World Cup and Ashes double header on home soil.
But with head coach Trevor Bayliss planning to step down when his contract expires in December, Farbrace faced an uncertain future.
He will now take the role of sport director at Edgbaston, the role vacated by Giles when he became managing director of the England men's team in December.
Farbrace, the former Kent and Middlesex wicketkeeper, joined the England set-up under Peter Moores in 2014 and took over as interim coach after the latter's sacking the following year.
He earned praise for the attacking cricket he encouraged during the visit of New Zealand and was credited with kickstarting the team's one-day revolution which has continued in earnest during his partnership with Bayliss.
Farbrace will not now get to see that journey through – he begins work with the Bears as soon as he returns from the Caribbean in March – but is confident of major success in the coming months.
"I have been fortunate to taste some genuine success and be part of the development of some excellent players, who have the world at their feet this summer," he said.
"I wish them every success. I believe they have the right attributes to create history by lifting the World Cup in July and winning the Ashes that follows it.
"There is never a great time to leave an international set-up and despite what will be a fantastic summer for English cricket, the opportunity to shape the future of one of the game's biggest counties was too much to resist.
"It would have been tough for me to have turned down the opportunity once Warwickshire showed an interest in me."
Giles, who must now decide whether to appoint a short-term replacement before the appointment of a new head coach, paid tribute to Farbrace.
"I would like to thank Paul for all his efforts over the last five years as a key figure in England's success across the red and white ball formats," he said.
"Paul was integral, alongside, Andrew Strauss, Trevor Bayliss and Eoin Morgan, in transforming our white-ball strategy, which has seen us become the best team in the world leading into a World Cup year.
"I will now start the process to find a successor and work closely with our existing set-up to ensure we have everything in place ahead of a busy summer of international cricket."
