Leinster's scrum coach Greg Feek will join the Ireland management team on a full-time basis from the start of the next season after signing a two-year contract with the Irish Rugby Football Union.
New Zealand compatriot and current Ireland coach Joe Schmidt recruited Feek as a scrum specialist in June 2010, from the Hurricanes in Wellington, after taking over at Leinster.
The pair steered the province to historic back-to-back Heineken Cups in their first two seasons as well as securing a unique treble in 2013 by capturing the Amlin Challenge Cup, Rabo Direct Pro12 and British & Irish Cup titles.
Feek had already been involved as a specialist consultant with the Ireland squad for two years before Schmidt succeeded Declan Kidney at the national helm last year.
Ireland won the 2014 Six Nations Championship under Schmidt and Feek's guidance and the latter's new role will include the coaching of the national team's scrum as well as being involved in the National Scrum Development Programme.
Feek won 10 caps for the All Blacks between 1999 and 2001 and played Super Rugby with the Canterbury Crusaders.
Schmidt said: "Greg played an important role during the Six Nations and the national coaching staff are delighted that he will be joining us on a full-time basis. He will also be a valuable addition to the National Scrum Development Programme."
Feek said: "I am excited to be taking on this new role. I have thoroughly enjoyed my time working with Leinster and have grown as a coach at the province.
"There is some good scrum talent across all four provinces but there is always plenty to work on as we attempt to maximise the growth and development of the emerging talent while also staying as competitive as possible at the top level."