McNiven finished the season with a 21–10 record and a .915 save percentage; despite not being expected to make the OJHL playoffs, the Raiders defeated both the Milton Menace and the Buffalo Jr. Sabres before falling to the Toronto Lakeshore Patriots in the West conference finals.
[4] On February 15, 2017, McNiven stopped all 16 shots he faced for his 10th career junior ice hockey shutout, passing Jordan Binnington for the most in Attack history.
Approaching the 2022–23 season without an NHL or American Hockey League (AHL) offer, McNiven was signed to a contract with the Greenville Swamp Rabbits of the ECHL on October 10, 2022.
[14] However, McNiven opted to continue his professional career overseas, agreeing to a contract with the France-based Rapaces de Gap of the Ligue Magnus in early February 2024.
He subsequently took an assistant coaching position with the Powell River Kings of the British Columbia Hockey League (BCHL) beginning in the 2024–25 season.