Deutsche Bank is to create 165 jobs in a new data lab and technology and operations division.
The global banking firm opened its new centre in Dublin, three years after it committed to recruiting 700 people for its Irish base.
The investment was welcomed by IDA Ireland and Jobs Minister Mary Mitchell O'Connor.
"The Government has been making strenuous efforts to ensure that we have the right conditions in place in Ireland to continue job creation across the country," she said.
"I look forward to a long and fruitful engagement with the company over the coming years and I am confident that this decision will be mutually beneficial for the company and for Ireland."