He joined Mansfield Town on a free transfer in August 1997 and made over 90 league and cup appearances for Mansfield in two seasons. He joined Leyton Orient for a fee of £40,000 in July 1999, and made over 60 league and cup appearances for Orient in three seasons, before returning to Mansfield Town in August 2002. He made over 70 appearances in his second spell at Mansfield but was released by the club after defeat in the Third Division play-off Final in May 2004. In 1997, he scored a four-minute hat-trick against Stockport County in a League Cup first-round tie. This remains the record for the fastest League Cup hat-trick.
Christie signed for Kidderminster Harriers at the start of the 2004–05 season, but injury restricted him to just one start and a handful of substitute appearances that season.
In January 2006, after having scored 10 goals in 23 league games, he was sold to Rochdale along with teammate Mark Jackson for a joint £35,000 transfer fee. In August 2006, Christie returned to Kidderminster on loan until December.
Kidderminster Harriers
Following the completion of this loan spell Christie re-signed for Kidderminster on an 18-month contract in January 2007.
He joined Stevenage Borough when his contract with Kidderminster expired at the end of June 2008. He made just three appearances for Stevenage, before joining fellow Conference National side Kettering Town on loan on 2 September 2008 until 17 January 2009. During this period he scored 6 goals in 15 games, including playing against Premier League side Fulham in the FA Cup. It was believed this loan spell was to be ended early for a loan move to York City to go ahead, but this deal fell through.
On 31 December 2008 it was announced that Christie was to make his loan deal at Kettering permanent on 1 January 2009, in a five-figure deal. However, on 2 February 2009 he left Stevenage to join Torquay United.
He signed for non-League King's Lynn in August 2009 after a short period on trial with Hibernians in Malta, following termination of the loan agreement with Torquay at the end of the 2008–09 season.
On 13 November 2009, it was announced that Christie had joined Conference National side Tamworth on non-contract terms. On the same day he was joined by his former Kidderminster teammate Simon Brown, who joined the club on a one-month loan deal from Wrexham.
Kettering Town
After playing for Tamworth till the end of the 2009–10 season, he rejoined Kettering Town for their 2010–11 campaign.
On 30 March 2011, Christie joined promotion chasing Conference North side Nuneaton Town until the end of the season. Christie's first game for the club was a 3–0 away win at Gloucester City. Justin Marsden's goal came from a superb bit of individual guile and skill to beat two defenders by Christie before squaring the ball to Marsden to slot home.
Tamworth
Following a successful trial, Christie returned to The Lambs.
