Born in
Toulouse, France, Nafti made his professional debut with his hometown club,
Toulouse FC. He was used sparingly during a three-year spell, and also played several games with the reserves. His best season was
1999–2000, as he appeared in 13 games and scored once to help the team return to
Ligue 1 after one year of absence. In summer 2000, Nafti joined
Racing de Santander in
La Liga and, as in his previous club, started his stint appearing for
the B-team. In the
2000–01 season he played in just three games for the main squad, which was eventually relegated, then proceeded to become a very important midfield element for the
Cantabrians in the following three years, whilst collecting 41
yellow cards and three
red. Nafti was signed on loan by
Birmingham City in the final minutes of the January 2005
transfer window, making his
Premier League debut on 5 February in a 2–0 loss away to
Manchester United in which he started and was booked. Sometimes referred to as "Nasty" due to his fiery nature and tendency for cautions, he was primarily signed to replace the outgoing
Robbie Savage, and finished
the season strongly, which led to a permanent deal being agreed in the summer. Nafti's
2005–06 campaign came to end before it had even begun, with a severe injury to his
cruciate ligaments in a friendly with
Deportivo La Coruña in early August 2005. He recovered sooner than expected, and was able to start the last match of the season, a 1–0 loss at
Bolton Wanderers, with relegation already confirmed. After having appeared in 32 games in
2006–07 to help Birmingham return to the top division, Nafti scored his first goal for them on 13 August 2008, in a 4–0 win against
Wycombe Wanderers in the
2008–09 League Cup. In June 2009, after the club chose not to renew his contract, he signed a two-year deal with
Aris Thessaloniki in Greece. On 12 September 2009, Nafti scored the only goal of the home match against
PAS Giannina to put Aris top of the
Super League Greece after three matches. He finished
his debut season with four goals from 22 league games, as Aris finished fifth. During the January 2011 transfer window, the 32-year-old Nafti left Aris and returned to Spain, signing an 18-month contract with
Segunda División club
Real Valladolid. He spent the
2012–13 season with
Real Murcia, helping them avoid relegation from the second tier, and had considered retiring from the game before dropping down a division to sign for
Cádiz. He established himself in the latter team but was also troubled by injury, and after they signed midfielder
Jon Ander Garrido in the January 2014 transfer window, Nafti's contract was cancelled. ==International career==