Drew O'Brien, who was executive VP/managing director at BCW, has joined Seven Letter in its Boston office.
At BCW, he also was president of its Direct Impact grassroots communications and advocacy unit.
O'Brien has federal government experience, serving in the State Dept. under John Kerry. He was the State Dept's special representative for global partnerships dealing with outreach to the private sector and NGOs.
He also played key roles in the Our Oceans Conference, Global Entrepreneurship Summit and America's response to the Ebola crisis in West Africa.
Before heading to DC, O'Brien was special assistant to Boston mayor Thomas Menino, chief of staff to the Massachusetts State Lottery Commission and deputy chancellor to the University of Massachusetts Boston.
"As far as strategic communications advisors go, there is no one better than Drew O'Brien," said Seven Letter CEO Erik Smith.
Washington-based Seven Letter merged with Boston's O'Neill and Assocs. in 2020.
They are part of Public Policy Holding Co.