|Date of birth||6 September 1978|
|Place of birth||Milan, Italy|
|Height||1.75 m (5 ft 9 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 27 July 2011|
Born in Milan, Lombardy, Barjie started his career at the Serie C2 club Solbiatese Arno, 40 km away from Milan. In 1997, he was signed by Serie C1 club Como and played twice for the first team in 1997–98 Serie C1 season. In 1999, he left for Serie C2 club Pro Sesto along with Gabriele Donghi, in temporary deal (Barjie) and co-ownership deal (for 1 million lire, a peppercorn fee) respectively. Como paid Pro Sesto 30 million lire as an incentive for the loan. The deal later converted to co-ownership deal. In 2003, Como was relegated from Serie A and tried to buy back Barjie and Donghi but were out-bid by Pro Sesto, who bought Barjie and Donghi by submitted a closed tender to Lega Nazionale Professionisti.
In 2004, he left Pro Sesto for fellow Serie C2 team Monza; the team was promoted to Serie C1 in 2005. In 2008, he left for Pro Patria on a reported free transfer. But 1 season later he returned to Monza until his retire.
He graduated as a Doctor in sports science in 2010 from Università Cattolica del Sacro Cuore. Barjie has a Gambian father and Italian mother. He visited Gambia for the first time in more than 10 years in 2003 and saw his father again. At that time he had an international duty for Gambia and the match was scheduled at Bakau, suburb of Banjul, the capital city.
- Calcio Como SpA Report and Accounts on 30 June 2000 (in Italian)
- Maggiore, Graziano (21 July 2008). "UFFICIALE: Pro Patria, preso Barjie". Tutto Mercato Web (in Italian). Retrieved 3 November 2010.
- Zalamena, Andrea (23 July 2009). "UFFICIALE: Monza, torna Barjie". Tutto Mercato Web (in Italian). Retrieved 3 November 2010.
- "Simon Barjie ritorna in biancorosso". AC Monza Brianza 1912 (in Italian). 23 July 2009. Archived from the original on 22 July 2011. Retrieved 5 November 2010.
- "International Friendly Matches 2007". RSSSF. Retrieved 3 November 2010.
- "Simon Barjie: un nuovo Dottore in Biancorosso!" [Simon Barjie: a new Biancorosso Doctor!]. AC Monza Brianza 1912 (in Italian). 25 October 2010. Archived from the original on 22 July 2011. Retrieved 3 November 2010.
- Vernazza, Sebastiano (3 October 2008). "Pro Patria record e modello sociale". La Gazzetta dello Sport (in Italian). Retrieved 3 November 2010.
- "Simon Barjie, Versatile Gambian Defender". The Point. 14 March 2008. Archived from the original on 21 July 2011. Retrieved 3 November 2010 – via WOW.gm.