Gooijer was born on September 2, 2004, in Blaricum and followed Ajax's youth academy since 2016. He made his debut in professional football on March 7, 2022, during the match Ajax U23 - ADO Den Haag (6-3). So far, the right-footed player has made 36 appearances for Ajax U23.
Ajax and David Kalokoh have reached an agreement on a new contract. The new contract of the 18-year-old left winger runs from September 1, 2023, until June 30, 2027. His old contract ran until 2024.