Prior to the start of the 2008–09 season Sinoti began his professional career with French club Toulon, playing in the same team as cousin Jerry Collins.
[2] Following the demise of Aironi due to financial problems, he joined up with the replacement Italian representatives in the Pro 12 league, Zebre.
He left Zebre at the end of the 2012/13 season, and joined Wellington for the 2013 ITM Cup campaign.
[3] On 24 December 2013, Sinoti signed for English side Newcastle Falcons in the Aviva Premiership for the 2013-14 season.
[7] An injury sustained on international duty saw Sinoti miss the Rugby World Cup 2015 in England.