Some 160 jobs are to be created with the expansion of companies in Galway and Cork.
Hortonworks, a California-headquartered software firm, said it was opening a new office in Cork.
It is recruiting for 50 staff in technical support, finance, HR, marketing, IT and operations roles.
Founded in 2012, the company provides technical support for software used in managing large amounts of data.
It has recently opened offices in London and Sydney.
Also in Cork, home-grown technology company Fortuity said it was doubling its workforce by taking on ten new staff.
The roles in cloud computing, business software, data analytics and cloud and cyber security will be based at the firm’s Carrigtwohill offices.
Separately, the merger of two technology companies in Galway is to result in 100 new jobs, bosses said.
Ice Cube, a software solutions consultancy which worked with credit unions, is teaming up with Tec Support, an IT support business.
The new company Intuity said it will expand its workforce by 100 over the next three years.
