[8] Mitchell trained at the Film and Television Studio International and worked with professionals such as Joss McWilliam, Iain Gardner, Kim Krejus and Dean Carey.

Whilst working in Melbourne he successfully auditioned for the guest-role of Chris Knight in Neighbours and appeared in 11 episodes.

[12] Following his departure from Home and Away, Mitchell was cast as John Young in The CW's remake of Tomorrow People in February 2013.

[17] In August 2018, Mitchell was cast in the lead role of Captain John "Abe" Abraham in the CBS drama The Code.

[20] Mitchell played the lead role of Danny in The CW drama The Republic of Sarah which was written by Jeffrey Paul King.

[23] In April 2022, he was cast in the role of Ken, the King of the Gods, in the fourth and final season for the CW drama Legacies.

[24] Mitchell also joined the cast of Big Sky for its third season as Sunny Barnes' (Reba McEntire) son Cormac.

[25] In 2023, he played Russ in the Hallmark Channel television film A Pinch of Portugal, alongside Heather Hemmens.

[26] Mitchell made several appearances as a guest star in the ninth season of Chicago Med as ED doctor Mitch Ripley.

Mitchell once shared a house with his H2O: Just Add Water co-stars Burgess Abernethy, Phoebe Tonkin and Cariba Heine.