Nissilä was born in Kuopio to a Conservative Laestadian family. Nissilä and his six siblings were raised by their single-parent mother. In Laestadianism, competitive club sports are prohibited, and Nissilä only played football with his brother and friends until aged 10, when his mother reluctantly allowed him to join a youth team of Kuopion Palloseura (KuPS) for the first time.[2]
He later resigned from the Laestadian movement.[2]
Club career
Nissilä started his senior career with KuPS first team.
He signed with Zulte Waregem in 2018.[3] According to media, the transfer fee was the highest in the history of KuPS at the time.[4] He made his debut on 10 November, playing the first 58 minutes of a 2–0 win against Lokeren.[5]
He returned to KuPS on loan in February 2020,[6][7] and subsequently signed a permanent contract for the 2021 season. At the end of the season, Nissilä was named the Veikkausliiga Player of the Year.[8]
Nissilä joined K League 1 side Suwon FC in January 2022.[9][10] He managed to make 23 appearances and scored two goals for the club, before he suffered an ankle injury in the game and would miss the rest of the season. In early 2023, while attending a Suwon training camp, the club announced they will release Nissilä from his contract.[11]
In the early 2023, he returned to KuPS again on a short contract,[12] and left the club in July for taxational reasons.[13][11] He spent a three-month hiatus from football, and travelled in Thailand and Bali, Indonesia, in the late 2023.[11]
