He has joined the Glasgow Warriors on a deal which will see him stay with the club until at least May 2015.
Maitland told www.glasgowwarriors.org : "I really want to hit the ground running with the Warriors but I know that I've got a lot of work to do to get into this team.
"There is a really strong side being put together here at Scotstoun and the competition for places is immense. It's a sign of the ambition and I want to play my part in that.
The 24 year old, who won world titles with New Zealand under-19 and under-20, had been courted by other Super Rugby sides before committing to the country of his grandparents, both of whom were born in Glasgow.
Maitland continued: "I have a lot of strong family connections with Scotland so the chance to live and play in Glasgow is a very exciting opportunity.
"I'm aware that people have already talked about representing national teams but my focus is on performing well for the Warriors and if that leads to other opportunities, that will be a bonus.
Glasgow Warriors head coach, Gregor Townsend, said: "It's great to welcome Sean to Scotstoun and have him on board as we enter a crucial stage of the season.
"We've got some big games coming up, starting this Friday at Munster, and this is a great boost for the club.
"We know the quality Sean brings, his scoring record in Super Rugby speaks for itself, but he knows he has to earn his place in the team as we have a lot of quality in the back division here.
"I'll be looking for him to work hard in training and earn the chance to show the supporters what he's all about."
Glasgow Warriors play Munster in the RaboDirect PRO12 at Thomond Park on Saturday, 1 December, kick-off 7.45pm. The next home game at Scotstoun is in Pool 4 of the Heineken Cup against Castres.
Great Main and North stand seats for the game are now on sale online via www.glasgowwarriors.org and by calling 0844 800 3490.
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Book before midnight on match-day (i.e. Thursday night into Friday morning) to save £5 on match-day adult, student and senior citizen prices.
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