After using a redshirt season in 2013, Peirson played college football for the Gannon Golden Knights from 2014 to 2017.

[2] Following injuries to the Lions' offensive line, Peirson made his regular season debut on October 6, 2018, against the Toronto Argonauts where he started at centre.

[2] He also made his post-season debut that year as he started at centre in the team's East Semi-Final loss to the Hamilton Tiger-Cats.

Following the Lions' training camp in 2021, Peirson made the team's active roster as a backup offensive lineman.

[2] In 2022, he again made the team's active roster as a backup, but started at centre for two games in September following an injury to Sukh Chungh.