Staffordshire CC chief executive Nick Bell has announced he is to leave the council.
Mr Bell, who has led the authority since April 2010, will depart in October to become chief executive of the education, employment and training firm Prospects.
Philip Atkins (Con), leader of the council, said it would look for a “similarly high calibre replacement”. This may mean making interim arrangements “to ensure the county council continues to deliver for Staffordshire people,” he said.
He added: “Working closely with me and my cabinet over the last four years, Nick has overseen and driven essential and successful changes at Staffordshire County Council through one of the most challenging periods in local government history.”
Mr Bell said: “The last four years have proved to be the most enjoyable, challenging and exciting of my career to date.
“Everything that has been achieved is testament to the passion and commitment of the political leadership, the team at the county council and partner colleagues across the county to do very best for residents.”
Mr Bell has worked in local government for the past 20 years, including roles as deputy chief executive at Essex CC and at director level at Westminster City Council, Bedfordshire CC and Harrow LBC.