James Kenny, JP Morgan's head of investor services, told the FT that the bank meant to hire a "significant" number of staff in Dublin to expand the custody business.
The firm now employs around 500 people in Dublin in custody and fund services, transaction services and technology and operations.
The American banking giant has acquired 200 Capital Dock in Dublin, a building with the capacity to house 1,000 people.
Daniel Pinto, chief executive of JP Morgan's corporate and investment bank, said at the beginning of this month that a "substantial portion" of the lender's business in London will have to be moved to the EU.
IS set to buy 200 Capital Dock on Sir John Rogerson's Quay in the heart of Dublin's Docklands.
The Financial Times says that demand for financial services talent in Dublin is likely to "shoot up" as insurers, banks and financial services groups consider expanding operations there in the lead up to, and following, Britain's official exit from the EU.
"Dublin has the vibrant business and technology communities that suit a global firm like ours", Carin Bryans, senior country officer for JPMorgan in Ireland, said in a statement Monday.
Other banks including Standard Chartered, Deutsche Bank, Goldman Sachs and Morgan Stanley have also indicated they could relocate positions from the City of London.
Some disappointment has been expressed that most of the jobs created by JP Morgan will be in the custody and funds services businesses. In the run up to the referendum, the bank had warned up to 4,000 roles could be lost. Deutsche Bank said in April that it might move up to 4,000 jobs out of the United Kingdom as a result of Brexit, which would be almost half its United Kingdom workforce.