About 155 new jobs are to be created by a firm offering support services to insurance and financial services markets worldwide.
OSG revealed plans to fill the positions in Dublin over the next three years following a six million euro investment.
Enterprise Minister Batt O'Keeffe revealed Enterprise Ireland will support the company's aim to expand its international operations in the insurance and financial services outsourcing market.
OSG chief executive Malcolm Hughes said the firm was an established and successful Irish company with local expertise and ambitious growth plans.
"Since we started the business in 1984, OSG has provided our clients with first-class advice, service and innovation," he said.
"We are now ready to build on recent growth and to take the crucial next step to further expand into international markets and develop new and exciting business opportunities."
The Sandymount-based firm, which already employs 245 people at nine service centres across the country, offers a range of support services including claims management, sales, customer services and consultancy.
Enterprise Ireland's investment will provide further support in the areas of R&D innovation, professional training, marketing and product diversification.
Mr O'Keeffe described the move as a significant investment in productivity and efficiency that secures jobs and growth for the firm.
"Firms such as OSG are at the forefront of Ireland's smart economy, creating high-quality sustainable jobs and driving export sales across the globe. With this research and development investment and a strong competitiveness drive, OSG is positioning itself at the leading edge of the international financial services sector," said Mr O'Keeffe.