Kelly is the new chief executive of Action for A-T, a research charity that fights the genetic disease Ataxia-Telangiectasia. He joins after a short spell as head of the St. George's Society of New York.
Naomi Dickson, who is communication and training coordinator at Jewish Women's Aid, has been promoted to executive director.
The children's cancer research charity Kidscan has appointed Dr David Pye as scientific director.
The NSPCC has appointed Francis McAllister as head of community and events fundraising and Stephanie Mitchell as head of fundraising strategy and planning. McAllister was director of fundraising at Hartlepool and District Hospice; Mitchell worked at Deloitte.