DIANA Terris, chief executive of Warrington Borough Council, for more than five years, is leaving the authority to take up a similar role in Yorkshire.
She is to become chief executive of Labour-controlled Barnsley Metropolitan Borough Council.
She said: "As chief executive of Warrington, I am proud to have led significant organisational transformation and delivered real service improvements.
"I am delighted that Barnsley Metropolitan Borough Council have offered me the position of chief executive and while it is subject to the usual formalities, am looking forward enormously to taking up my new role.
"I will leave Warrington with a huge sense of pride - it has been a real privilege to work with some fantastic, hard-working and ambitious officers, members and partners and to be able to witness first hand the positive difference we have been able to make for the people and communities of Warrington. I will certainly be heading across the Pennines with some happy memories."
Leader of the council Terry O'Neill said: "I'd like to extend our congratulations to Diana.
"She has an impressive track record of achievement as chief executive of Warrington Borough Council over the last five years and has decided that the time is right to look for new challenges. I am pleased that she has been offered a great opportunity to become chief executive in Barnsley and I'm sure she will approach her new job with the same professionalism and enthusiasm as she has shown here.
"We know there are many challenges facing local government. We will take a fresh look at how we can put Warrington in the best possible position to be ready for the exciting times ahead. In the meantime, it will be business as usual."  
Town Hall watchers have been predicting that Mrs Terris would not stay at Warrington ever since Labour regained control last May.
A number of other officers appointed during the reign of the Liberal Democrat-Conservative coalition are also believed to be seeking posts elsewhere.