Based at Oxfam UK's Oxford HQ, Bray is in charge of a four-strong team, which has a remit to co-ordinate media coverage of Oxfam staff working in disaster zones.
"My first job has been to liaise with journalists covering the current Lebanon crisis and put them in touch with our workers in Beirut," said Bray.
"We have to respond immediately to an emergency and show the media on the ground what we are doing to help people caught up in it."
Prior to Oxfam, Bray was head of public affairs at Practical Action for three years. He joined the voluntary sector as an aid worker in Mozambique in the mid-1980s, before becoming a PRO. He held various media roles at Oxfam from the early 1990s until joining Practical Action in 2001.
Bray replaces Brendon Cox, who left last month after five years to become a director of London-based Crisis Action.
In June, Oxfam officials were widely quoted following the Yogyakarta earthquake on the Indonesian island of Java.