Lauitiiti made his National Rugby League début in April 1998 for the Auckland Warriors. He was selected for the New Zealand test squad for the 2000 ANZAC test but missed out on final selection for the match, instead making a try-scoring début against the Cook Islands at Reading in the 2000 Rugby League World Cup. He also scored against Wales in the next game at the Millennium Stadium. In 2002 he was named the NRL's second-rower of the year. He was an integral part of the Warriors squad that reached the 2002 NRL Grand Final, the first time in the club's history, however they lost the match to the Sydney Roosters. Lauitiiti, who would go on to play 14 times for New Zealand, was part of the Kiwis side that toured Great Britain and France in 2002, featuring in seven out of the eight games on the tour, including all three tests against the Lions, plus games against St Helens, England A, Wales and France. He also scored in the third test against Great Britain. When Lauitiiti was released from his contract with the Warriors it sparked a worldwide chase for his signature. However, the Leeds Rhinos beat competition from 14 other clubs in Australia and England to secure the second rower. He had appeared in 115 games for the Warriors and scored 33 tries by the time he left the club after the 2003 NRL season.
Leeds
Lauitiiti joined Leeds in May 2004 on a two-and-a-half-year contract. He made his début for Leeds against Salford and took little time to settle in, scoring his first try in the subsequent game against Bradford Bulls. His incredible ball-handling skills earned him a place in the Tetley's Super League Dream Team in 2004. He played for the Leeds Rhinos at second-row forward in their 2004 Super League Grand Final victory against the Bradford Bulls. As Super League IX champions, the Rhinos faced 2004 NRL season premiers, the Bulldogs in the 2005 World Club Challenge. Lauitiiti played from the interchange bench in Leeds' 39-32 victory. In 2005 Lauitiiti scored 14 tries in 32 appearances including 17 as a replacement. His 14 tries includes an incredible five tries against Wakefield when he came off the bench to become the first forward in the summer era to score five tries. He also appeared in the 2005 Challenge Cup Final. He was subsequently named in 2005's Super League Dream Team. He helped Leeds to their second successive Super League Grand Final appearance when he scored the winning try against St Helens with an 80-metre run in the Grand Final Qualifier, then played in the 2005 Super League Grand Final which ended in defeat for Leeds. In the 2005 Tri Nations tournament Lauitiiti once again joined the New Zealand squad and scored a try against Great Britain after coming on from the bench, and was then part of the successful squad who defeated Australia in the historic final victory. Lauitiiti played in Leeds' three Grand Final wins in a row between 2007 and 2009. He was also selected to represent the All Golds side in the match against The Northern Union at the Halliwell Jones Stadium, Warrington in October 2007, scoring two tries in the match. Lauitiiti was named in the Samoa squad for their 2008 Rugby League World Cup campaign. He played in the 2009 Super League Grand Final victory over St. Helens at Old Trafford. He played in the 2011 Super League Grand Final victory over St. Helens at Old Trafford.
Lauitiiti joined Wakefield Trinity for the 2012 season and remained with the club until the end of 2015. On 15 October 2015, it was announced that Lauitiiti would play one more time for Leeds in a one-off exhibition match against New Zealand, one of the countries he had previously represented.
New Zealand Warriors
In November 2015 it was announced that Lauitiiti would return to the New Zealand Warriors, with the signing of a second-tier contract for 2016. He retired at the end of the season.
