[6] Representing Sweden at the 2019 Spirit International Amateur alongside Vincent Norrman, Beatrice Wallin and Maja Stark, he helped secured the men's silver, only beaten by the U.S.

In 2021, he recorded nine top-10 finishes, including reaching the final of the Swedish Matchplay Championship, and topped the Order of Merit.

In 2023, Blommé led the Dimension Data Pro-Am in South Africa after two rounds, and finished the tournament as runner-up, four shots behind Oliver Bekker.

He shot a 63 to take the lead after round one in the Nelson Mandela Bay Championship the following week, before a 9 on the penultimate hole saw him crash down the results list.

[9] In September, he won the Swiss Challenge in a playoff against compatriot Jesper Svensson to finish 6th in the season rankings and graduate to the European Tour for 2024.