Financial management and advisory company Merrill Lynch is to create 300 jobs over the next four years in Dublin.
After months of talks with the IDA, the company has agreed to locate its European support services centre at Central Park, Leopardstown, Co Dublin.
Some 200 positions have already been filled during the past year. This new investment will bring Merrill Lynch's employment in Ireland to 700 people.
Merrill Lynch's Central Park offices will have portions of its technology business, operations and finance activities, and its Irish private-client business.
It is Merrill Lynch's second major office facility in Dublin. The firm, which has had a presence in Dublin since 1995, also occupies two floors of the Treasury Building in central Dublin.
Mr Mike Ryan, Chief Executive Officer of Merrill Lynch in Ireland, said the company had decided to locate in Dublin because it offers a "superb" base for financial services firms.