Born in Freetown, the capital of Sierra Leone, Sesay-Fullah played for Italian club Accademia Internazionale in 2006–07 season.
[4] Sesay-Fullah joined Internazionale's Allievi Nazionali team in 2007–08 season, from the affiliated club, which he won the league champion.
[6] In the next season he was promoted to Inter's senior youth team Primavera, but failed to play regularly nor scoring.
On 26 August 2011, Sesay-Fullah joined Belgian second division club FC Brussels on loan from Parma.
[10][11][12] He also received a call-up for national under-23 team in 2012 CAF Men's Pre-Olympic Tournament qualifying rounds.