Les Kiss will return as Director of Rugby for the province once the World Cup finishes next year, with Neil Doak stepping in as Head Coach.
Doak has been confirmed as the new head coach of Ulster, while Kiss will resume his role as Director of Rugby once he has finished working with the Ireland panel at the end of next year's World Cup.
With David Humphreys having left abruptly in the summer and Mark Anscombe ousted, Kiss had been acting as interim Director of Rugby.
He will now join the national team as they prepare for the Guinness Series, Six Nations and RWC 2015.
"We are pleased to have completed negotiations with Neil Doak, as Head Coach, and are close to finalising our other coaching requirements," said Ulster Rugby CEO Shane Logan.
"We will announce a team manager in due course to bridge the gap prior to Les taking up his role allowing him to be fully committed to his coaching duties with the National Team."
Kiss admitted he was pleased to have the security of knowing he had a full-time role to take up once his Ireland duties finish up.
"I am very appreciative of the continued faith the IRFU and Ulster Rugby have demonstrated in me and, while I’m delighted to get the security in the long term, I am very much focused first and foremost on the next 12 months,” said Kiss.
"It’s exciting that the Springboks arrive here in just over 3 weeks and that the Guinness Series is almost upon us. The national coaching team have remained in close contact and Joe has been particularly supportive of my dual roles over the last few months, which has made things a lot easier for me."
