David Miliband is standing down as the Labour MP for South Shields.
The former Foreign Secretary has been on the back benches since he lost the race for the party's leadership to his brother Ed.
Mr Miliband has confirmed that he has accepted the job as head of an International Rescue Charity in New York.
He will however continue his non-executive role with Sunderland Football Club.
The 47-year-old has been the MP for South Shields since 2001.