Sales, marketing and business process outsourcing firm MarketStar is to create 300 jobs in Dublin.
The roles will be filled over the next three years and will bring to 500 the numbers employed by the company in Ireland.
The investment comes as the Utah-headquartered company has secured a new building in the Central Park complex in Leopardstown for its new Europe, Middle East and Africa headquarters.
"Establishing Dublin as our EMEA headquarters marks an exciting milestone in our overall growth strategy, solidifying our commitment to the European market and strengthening our global sales capabilities," said Keith Titus, President and CEO of MarketStar.
"We will continue to thoughtfully expand our global footprint, and this new Central Park facility enables MarketStar to work from a position of strength in the European market to enable growth for our clients and employees."
MarketStar has been in Ireland since 2019 when it purchased Irish inside sales agency Product2Market.
At that time it employed 100 staff, but it has since doubled its headcount here as well as its revenue.
Globally the company, which was established in 1988, employs 1,750 people.
It operates across 50 countries and supports 20 different languages.
The Dublin office supports customers in Europe and the Middle East, Latin America, and Asia Pacific.
News of its expansion was welcomed by the Government and IDA Ireland, which has supported the investment.
"Ireland has a proven track record of being an attractive location for global BPO companies looking to access a well-established talent pool to serve a growing client base in the EMEA region," said IDA chief executive Martin Shanahan.
Tánaiste Leo Varadkar said as a global leader in its field MarketStar's new headquarters will provide a great platform to highlight Ireland's highly skilled workforce to the world.