Ahadi's first senior club was PKKU in the Kakkonen. He made his senior league debut for the club on 29 April 2017 in a 3–2 away victory over PEPO. He was subbed off after 68 minutes, to be replaced by Phondo Wälläri.[4] He scored his first league goal for the club on 13 June 2017 in a 1–1 home draw with Klubi 04. His goal, scored in the 61st minute, made the score 1-1.[5]
Honka
In December 2017, Ahadi moved to FC Honka in the Veikkausliiga, arriving alongside Felix Ferahyan and Youness Rahimi.[6][7] He made his league debut for the club on 14 May 2018 in a short stint off the bench against VPS. He was subbed on for Kasperi Liikonen in the 88th minute.[8] For the remainder of the season, Ahadi played with the Honka youth team, Honka Akatemia in the Kakkonen. He scored two goals in Honka Akatemia's 6–0 victory over KK-46 on 1 June 2018.[9]
After coming back from loan at Ekenäs, Ahadi signed a contract extension with Honka for the 2019 season.[10]
Ekenäs (loan)
In July 2018, Ahadi was loaned out to Ekenäs in the Ykkönen.[11] He made his league debut for the club on 28 July 2018 in a 3–0 away victory over Jaro. He was subbed on for Hanson Boakai in the 77th minute.[12]
HIFK
On 5 February 2021, he signed with HIFK for the 2021 season.[13] In December 2021, the contract was extended for the 2022 season, with an option for 2023.[14]
Return to EIF
On 12 August 2022, Ahadi returned to EIF until the end of the season.[15]
Return to HIFK, move to Balzan
On 7 December 2022, Ahadi once again signed with HIFK for the 2023 season, but was released in 2024.[16] In July 2024, he was signed by the Maltese Premier League side Balzan.[17]