After impressive displays for the Prisons Department and NBT FC in the domestic league,[3][4] Abu Bakar was drafted in to play for Brunei's sole professional club DPMM FC in the SingaporeanS.League and he contributed 3 goals in 20 matches, winning the 2009 Singapore League Cup.
Abu Bakar was sent on loan to his old club the Prisons Department while DPMM could not resume playing due to a FIFA ban[broken anchor].[5][6] In this period, he suffered an injury which kept him out for a year.[7] Contemplating retirement, his then-coach Vjeran Simunić finally convinced him to play for DPMM in their comeback season in 2012, but he only managed to appear in 4 games before being released.[8]
Abu Bakar moved to Kota Ranger FC in 2016.[13] He scored four goals against Menglait FC in his club's opening match for the 2017 Brunei Super League.[14] On 11 August, in a match that pitted two unbeaten teams in the Super League, Abu Bakar scored two goals to beat his club's direct rivals MS ABDB. The 2–1 score would send Kota Ranger three points clear off the top of the 11-team league.
Abu Bakar finished the 2017–18 season as the second highest top scorer (behind Abdul Azizi Ali Rahman) with 22 goals. His team also finished second in the league, three points off the champions MS ABDB.[15] He was unable to recapture his goalscoring form in the following season, but managed to win the FA Cup instead.[16]
Abu Bakar's league form in 2017 forced the doors to an international callup in December for the 2017 Aceh World Solidarity Tsunami Cup, nine years after last representing his country.[18]