His credits include The Outlaw League (Le gang des hors-la-loi) (2014), Degrassi: Next Class (2017), Charmed (2018), Speed Kills (2018), The Rest of Us (2019), and Runt (2020).

However, he is most notable for his role as Luke Patterson in the Netflix series Julie and the Phantoms (2020).

[5] In 2014, Gillespie made his film debut in The Outlaw League (Le gang des hors-la-loi).

[6] His film and television appearances include Charmed (2018),[7] he was in season 4 of Degrassi: Next Class (2017),[7] starred alongside John Travolta and Katheryn Winnick in Speed Kills (2018), worked with Heather Graham in The Rest of Us (2019),[7] and starred alongside Cameron Boyce and Nicole Elizabeth Berger in Runt (2020).

[7] In 2019, Gillespie was cast in the role of Luke Patterson in the Netflix musical series Julie and the Phantoms, which premiered in 2020.