Up to 200 jobs are to be created with the expansion of a financial services company.
Fidelity Investments said recruitment has already begun for the new roles at its second office in Dublin.
The new operation is based at One Waterside in the Citywest Business Campus at Saggart, west Dublin.
The expansion, which has been backed by the taxpayer through IDA Ireland, will bring the company's employment in Ireland to 900, according to the State investment agency.
Tanaiste Joan Burton said it was a very significant vote of confidence in Ireland's economic recovery and workforce.
"Fidelity is recognised the world over for its innovative financial products and services, and will deliver tremendous career opportunities for its new employees," she said.
Jobs Minister Richard Bruton, said he was delighted Fidelity is a world-leading company creating high-end jobs in Ireland.
"In recent years we have seen jobs growth in this area, and today's announcement is a major further boost," he added.
Fidelity has offices in both Dublin and Galway, with most staff working in the company's technology or business operations divisions. It originally set up operations in Ireland in 1996.
Regina Sullivan, of Fidelity Investments, said: "Our presence in Ireland is key to the success of our increasingly global servicing organisation."