With Annika Hocke, Blommaert won silver medals at the 2017 CS Minsk-Arena Ice Star and 2017 International Cup of Nice and competed at the 2018 Winter Olympics.

They received their first senior Grand Prix assignment, the 2013 Trophée Éric Bompard, after France's Daria Popova / Bruno Massot withdrew, finishing seveneth.

[9] They competed at the 2018 Winter Olympics in Pyeongchang, South Korea, as well as at the 2018 and 2019 World Championships, before dissolving their partnership.

Blommaert announced in July 2019 that he had formed a new partnership with Russian pair skater Elena Pavlova.

Due to Pavlova's visa issues, they indicated they would initially have to split time training between Russia and Germany.

Blommaert formed a new partnership with Alisa Efimova, who had previously competed with Alexander Korovin for Russia.

They placed 2nd at the 2022 German Championships but were not allowed compete internationally until Efimova had been released by the Russian federation.

[12] Going on to compete at the 2022 Grand Prix of Espoo, Efimova/Bloomaert won the silver medal behind Rebecca Ghilardi / Filippo Ambrosini of Italy.

[13] The pair didn't compete at the 2023 German Championships due to Bloomaert coming down with a high fever a couple of days before the event.