Avantcard is to create 40 jobs at its headquarters in Carrick-on-Shannon in Leitrim and its satellite office in Dublin.
The positions will include customer-facing roles, roles supporting the new An Post and Avantcard partnership announced last year, as well as a handful of specialist roles to support planned business growth.
The partnership with An Post will see it offering An Post branded personal loans and credits cards through the national post office network in the coming weeks.
Chris Paul, Avantcard’s CEO said: "We had an incredibly busy 2018 as the business continues to expand and we look forward to building on that in 2019 with our new team members."
AvantCard, which already employs 220 people in Carrick-in-Shannon and Dublin, used to be called MBNA before it was taken over in 2012.
It offers consumers offers credit cards and loans.
Last year Madrid-headquartered Bankinter bank bought Avantcard in a move that raises the prospect of a new foreign lender shaking up the market.
Today’s announcement today was welcomed by the Minister for Business, Enterprise and Innovation, Heather Humphreys.
Describing the new jobs as "a huge vote of confidence in the local workforce", Minister Humphreys said "Avantcard is living proof that you don’t have to be based in a big city to make a big impact."
"I would like to warmly congratulate Chris and the team at Avantcard on this huge achievement, which serves as an example for others to follow," Minister Humphreys added.