Tamsyn Barton is to stand down as chief executive of the umbrella body Bond after just over a year in the role, the charity announced today.
Barton joined Bond, which is the UK membership body for more than 450 international development charities, in February last year after nine years at the Department for International Development.
A Bond spokeswoman said Barton was leaving for personal reasons and did not have another job lined up. She would not be receiving a pay-off, the spokeswoman said.
Barton said in a statement: "My remit for the past year was to put Bond on the right road after a period of change, and I am proud that I leave the organisation in a position of strength."
She is due to leave on 25 April.
A Bond statement said: "Plans for the transition process are under way, with the board beginning the recruitment process for both an interim and a permanent appointment to succeed Tamsyn."
Caroline Nursey, who became chair of Bond in September, said Barton had been "particularly successful in enabling sector voice and advocacy with government".
Bond organised last week's safeguarding summit on behalf of DfID.
Nursey said it was a "critical time for the sector", which needed to do more to "challenge ourselves on the use of power in our organisations".
She said the charity’s annual conference two weeks ago was a "key moment for us to come together and reflect on what we need to do".