[3] In 2021, he finished solo third at the Göteborg Open on the Nordic Golf League, two strokes behind winner Jonathan Ågren.

[6] He birdied the final hole for a score of 17-under 269, a stroke ahead of Japan's Taiga Semikawa, to become the individual leader at the 2022 Eisenhower Trophy.

[7] His team, which also consisted of Ludvig Åberg and Adam Wallin, finished in second place behind Italy and ahead of the United States in third.

[8] Jonsson played in the Scandinavian Invitation at Ullna Golf & Country Club on the 2023 European Tour, and made the cut.

[13] Jonsson turned professional after the U. S. Amateur in 2024, and made his pro debut at the Indoor Golf Group Challenge where he finished tied 18th.