Stuart Barnes has been appointed Ireland Assistant Head Coach and National Bowling Lead.
He's been given an initial three-year deal, which will see him in place until the end of the current World Cup cycle.
He leaves Somerset to link up with Head Coach Graham Ford ahead of a busy period - Covod pandemic withstanding.
Barnes supported Ireland Men during their series against England earlier this year in a similar role that which he will now take up full-time in December.
(Stuart Barnes: Pic Somerset CCC)
"It was a great experience to link up with Graham Ford and the Ireland team for the series against England," said Barnes.
"I loved the challenge of the international game and adding value wherever I could. The opportunity to continue this on a full time basis for the next three years is incredibly exciting and I’m delighted to now be part of the team."
Richard Holdsworth, High Performance Director for Cricket Ireland, said: “We have been extremely impressed with Stuart’s exceptional technical and tactical knowledge of bowling, outstanding communication skills and relentless work ethic, although this came as no surprise to us given his great experience and our own knowledge of him.
"Stuart worked with Graham at Surrey for six years. They work extremely well together and their skills complement each other, and I have no doubt their relationship will rekindle now both are working with our international team.
"I also worked with Stuart for four years as part of Gloucestershire’s talent pathway, so know full well what he will bring to the table.”