He made his ATP doubles main draw debut at the 2014 ATP Vegeta Croatia Open Umag, partnering Dino Marcan, losing in the first round to the second seeds Pablo Cuevas and Horacio Zeballos in three sets.

In 2016, he made his first appearance in an ATP singles draw, also in the Croatia Open but lost in straight sets to Teymuraz Gabashvili.

In 2018, he played his first Challenger final in Ostrava, Czechia and he lost against Arthur De Greef in three sets.

In July, Serdarusic won his first title at the ATP 250 2023 Croatia Open Umag with Blaž Rola.

In 2022, after losing in Australian Open qualifying, his brother and coach, Filip Serdarušić, was deported due to being unvaccinated.