David Griffiths is charged with leading the continued development of the agency's international client franchise.
Andrew Hayes, chief executive, said: 'We have made excellent progress in attracting overseas clients that want to access our skills and relationships across the media and investment audiences. David's international experience and contacts will be enormously helpful to us.'
Griffiths said: 'I am excited to be joining Hudson Sandler and believe there exists an excellent opportunity for further growth in Hudson Sandler's international business.'
Most recently Griffiths was senior managing director EMEA for NYSE Euronext. In his previous role he marketed the New York Stock Exchange across the region and managed relationships with listed companies. Before this he was executive director, head of origination, equity capital markets at Lehman Brothers and a director and vice-president in the capital markets group at Salomon Brothers.