After studying civil engineering, Brosnan briefly attended the Gaiety School of Acting on a part-time basis.
was aired on Planet 3 TV in 2012..[11] His professional directorial debut came with his short film Jacob Wrestling With The Angel in 2013.
[20][21] Brosnan began working as producer and co-produced an RTÉ-funded short film by the comedy troupe CCCahoots Productions in 2017.
[22] He was later engaged by Locked In The Attic Productions to help produce the feature film Misty Button[23] which began its run of festivals in 2019.
[25] Brosnan was reportedly one of a number of people "duped" by false claims about a Halloween parade in Dublin in October 2024.