Tauriainen grew up in Veikkola, Kirkkonummi and started playing football in the local club FC WILD, before joining the HJK organisation.[4]
Club career
Klubi 04
On 18 February 2018 it was reported that HJK had signed a 2+1 year contract with its own protégé Julius Tauriainen.[5]
SC Freiburg II
Following a successful loan stint with SC Freiburg youth academy, it was announced on 2 July 2020 that HJK had accepted an offer from SC Freiburg for a permanent transfer of Tauriainen, for an undisclosed fee.[6] He was registered to the club's reserve team SC Freiburg II. After the season, the club gained promotion to 3. Liga.
Miedź Legnica II
Miedź Legnica announced on 15 September 2022 that Tauriainen had joined the club and that he would represent Miedź Legnica II.[7] He departed the club after a few months.
FC Lahti
On 6 February 2023, Tauriainen returned to Finland and signed with Veikkausliiga side FC Lahti on a two-year deal.[8] On 24 July 2024, it was announced that Tauriainen is sidelined for indefinite period of time due to surgery-requiring knee injury.[9]
Tauriainen hails from a football family; his father, Pasi, is a former international for Finland. His grandfather, Veikko and his uncles, Kimmo and Vesa, are also former footballers. While his younger brother Jimi is playing for Chelsea.[11]