More than 800 jobs are to be created across the island by professional services firm, EY, within the coming year.
Just over half of the positions will be offered to those with experience, with the remainder destined for new graduates.
The new roles will be in all seven of the company's offices in the Republic and in the north.
Three quarters will be Dublin-based, with the balance in Cork, Galway, Limerick, Waterford and Belfast.
They will span a range of specialties including tax, audit, consulting, economics, law, sustainability, technology and cyber-security, as well as other areas.
The expansion will bring to 4,200 the number of people employed by the firm on the island.
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EY said it was adding to its team as a result of a period of growth across all of the business areas it is active in.
"The fundamental changes brought about by the pandemic, coupled with wider macroeconomic headwinds and shifting business models, have created increased demand for our services as we help our clients tackle their most complex business challenges," said Frank O'Keeffe, Managing Partner, EY Ireland.
He added that EY’s new hybrid working model will mean the jobs can be done by people based across the island.
"If we have learned anything in the past 18 months it’s that the best talent can be located anywhere on the island and can still consistently deliver brilliant results," he said.
"Our people will have the ability to flex between working from client site, an EY office or from home in a way that works for our clients, our people and for our business."
The Taoiseach welcomed the news saying it is a significant milestone for EY and a strong endorsement of the all-island economy.
"It’s always encouraging to see high value jobs being created for both experienced professionals and the next generation of university graduates alike, and it’s a testament to the skills and talent available here in Ireland and a welcome endorsement of Ireland’s attractiveness as a place to invest and grow," Micheál Martin said.