Burger made his first-team debut for Feyenoord on 17 August 2018 in the 2018–19 UEFA Europa League third round qualifiers against AS Trenčín, coming on for Tyrell Malacia in the 83rd minute. On 29 August 2019, Burger scored his first goal in professional football in a 3–0 away win against Hapoel Be'er Sheva for Feyenoord in the play-off round of the 2019–20 UEFA Europa League. In December 2018, he signed another contract extension, keeping him at the club until 2023.
