Vonk was born in
Uitgeest on 16 December 1947. He spent the majority of his playing career at
AZ'67, playing for them as a
central defender for ten years from 1968 to 1978, before spending a year at
FC Volendam and subsequently retiring. After retiring from playing, he joined his boyhood club AZ'67 as assistant manager, spending five years at the club before moving to
Sparta Rotterdam in 1984. After a successful two years at the club, during which he guided them to 4th in his first season, he moved to
FC Twente, finishing third three times over six years. A disastrous spell in Spain with
Real Burgos followed in 1992, after which he became something of a journeyman manager, aside from three years in charge of AZ. Five years after leaving his last job at
Sportclub Enschede, he joined
Glacis United as manager and technical director. He left the club on 10 August 2018 for personal reasons. ==Personal life and death==