Jarrett grew up in South London, England. The 185 -centimeter-tall winger started his career as Arsenal Junior, but when he was offered no professional contract in the summer of 2003, he went to city rivals FC Wimbledon. For the " Dons " he played in the 2003/2004 season 10 games, but after the season, his contract was not renewed. He then moved to Brighton & Hove Albion.
In his two years on the south coast Jarrett made even though 25 games for the " Seagulls ", but on the other hand he was also borrowed twice: at Stevenage Borough ( in March 2005) and at Swindon Town ( in January 2006).
End of the 2005/2006 season he moved tentatively to Watford FC. After Jarrett had convinced in some friendlies during the summer break, the leaders of Watford signed on 16 August 2006 a one-year contract with him.
Since then he has played a league game for Watford; he became a substitute against Bolton Wanderers. In February 2007, he was loaned for one month at Boston United; when he had returned from the north, he was immediately sent on for the rest of the season to the Milton Keynes Dons. On 22 May 2007, his contract was finally dissolved. After an injury Jarrett played from 2008 to 2009 at Gillingham FC and the following season at FC Barnet. Since 2010 he is in Lincoln City in the Football League Two fourth-rate contract.
Despite his ongoing failures in England Jarrett was appointed for the first time in the national team of Sierra Leone on 30 September 2006 and came twice so far used.
In January 2006, the winger was involved in a traffic accident, due to which a man had to be rushed to a hospital. Jarrett was revoked for six months of driver's license, his sentence was 1,400 pounds (about 2,100 euros ).