Having gained a degree in
physical education at the
Institut Nacional d'Educació Física de Catalunya in 1998, Tribulietx's first foray into management came as the assistant coach of newly promoted
Segunda División B side
UE Sant Andreu. The next season, Tribulietx moved to
UE Figueres at the same level and, after the club's dissolution, moved to
UE Castelldefels. Tribulietx became the assistant manager at Auckland City under Paul Posa in 2008. In 2010, he was named as co-manager of Auckland City along with
Aaron McFarland; Tribulietx took full control of the club following the
2010–11 season, topping the
league in six out of his eight seasons and winning the playoff series three times. Tribulietx won seven consecutive
OFC Champions League titles between 2011 and 2017, the highest consecutive streak of any manager for any continental or international competition. As a result, Auckland City has qualified for seven consecutive
FIFA Club World Cup competitions. Tribulietx guided the
Navy Blues to a historic third-placed finish in the
2014 FIFA Club World Cup, falling to
Copa Libertadores champions
San Lorenzo in
extra time in the semi-final before defeating
Cruz Azul in a
penalty shootout in the third-placed playoff. In addition to his management duties at Auckland City, Tribulietx has also enjoyed external coaching roles, acting as technical advisor for the
Canada women's national football team at the
2012 Summer Olympics (winning an eventual
bronze medal), and for the
Solomon Islands national football team during the
2016 OFC Nations Cup. On 10 December 2021, he was hired by
FC Akron Tolyatti in the Russian second-tier
Russian Football National League. He left Akron on 2 March 2022 due to the
Russian invasion of Ukraine. On 1 May 2024, He was appointed as
United City's new head coach following the resignation of Romanian former footballer and current manager
Marian Mihail. ==Managerial statistics==