Career
Vermoelen was born in Antwerp, where he trained under Pieter Snyers. He became a master of the Antwerp Guild of Saint Luke in 1733. Nothing is recorded about his activity in Antwerp until he is recorded as executing a number of paintings in Rome in 1748.
In Rome he appears to have enjoyed high patronage as is demonstrated by two still lifes that he made for the renowned art collector Cardinal Silvio Valenti Gonzaga.
He died in Rome.