Most well known for his portrayal of Duncan Stewart on the Australian soap opera Home and Away, he is also notable for his recurring role as Titch on Breakers.
Early in his career, he appeared in episodes of Police Rescue and Big Sky.
Before McKensy took over the role of Duncan Stewart in 1998, the part was played by Lewis Devaney.
He and his three older siblings were raised in Sydney, Australia.
Gold Logie-winning actor Ray Meagher played McKensy's on-screen father, Alf Stewart.