The 25-year-old striker moved to the Limpopo-based side from Mozambican top flight side CD Costa do Sol.
Bakgaga revealed that Mbulu had signed a three-year contract with the club on their official Twitter page:
“Richard Mbulu, a striker from Clube de Desportos Da Costa Do Sol in Mozambique signed with Baroka FC for three years,” a statement read.
Mbulu is an experienced striker having played in Mozambique and Portugal.
The Mangoche-born forward won the Malawian Premier League Golden Boot award in 2016 while playing for Malawi Armed Forces (MAFCO) FC.
Costa do Sol then signed him at the beginning of 2017, but he left the club for Portuguese lower division side Sanjoanense a few months later.
Mbulu, who represented the Flames of Malawi at the 2018 Cosafa Cup in Polokwane, rejoined Costa do Sol last year and he since secured a move to Bakgaka.
The well-travelled frontman is also part of the Malawi squad which will participate in the 2019 Cosafa Cup in Durban
He will compete with the likes Onkabetse Makgantai, Siyabonga Vilane and Jemondre Dickens in the Baroka striking department.