[6] He intended to do a Masters degree in Cybersecurity at a London university, but declined the offer when he was cast in Red Rose.

He worked on-and-off for a number of years,[2] appearing in the 2015 drama Stonemouth as a young version of Christian Cooke's character[7] and the 2018 romance film Tell It to the Bees.

During his final year at university,[2] Mollica returned to acting when his Strange Town agent Ruth Hollyman got him the lead role opposite Joshua Griffin in Sean Lionadh's 2022 short film Too Rough,[8] which won a Scottish BAFTA.

[10] In 2024, Mollica starred as the lead character Max Williamson in Mikko Mäkelä's sophomore feature Sebastian, which opened at the Sundance Film Festival.

[12] Mollica also played a young version of Stephen Moyer's character Teddy in the Paramount+ series Sexy Beast.