Griffiths joins from Transport for London (TfL) and will take up his new COO role on October 15.
Previous to his stint leading on London Underground operations for TfL, Griffiths oversaw day-to-day operations at Virgin Atlantic.
Griffiths replaces Manchester-bound Brad Miller, who will become chief of staff at Stansted parent Manchester Airports Group.
Reporting to Stansted chief executive Ken O’Toole, Griffiths will be take the helm while the airport enacts its £600 million investment programme.
