Zumann made his motion picture debut as Milo in the horror film
Sinister 2 (2015). He then played Henry Perry in the independent adventure flick
Thrill Ride (2016). Zumann portrayed Jamie Fields in the Oscar-nominated
20th Century Women (2016) alongside
Annette Bening,
Greta Gerwig,
Billy Crudup, and
Elle Fanning. Zumann brought depth and vulnerability to the role, earning praise for his nuanced depiction of a boy coming of age amidst a cast of strong, influential women. He depicted
Gilbert Blythe on the Canadian television series
Anne with an E (2017-2019). Zumann portrayed Nathan Daldry/A in the teen rom-com movie
Every Day (2018) opposite
Angourie Rice. Zumann later played Jeff Owings in the 1960s set drama
To the Stars (2019). In 2021, he took on one of his most challenging roles as James Whitman in ''
Dr. Bird's Advice for Sad Poets''. Zumann's performance was lauded as "raw" and "emotionally resonant," with critics highlighting his ability to navigate the complexities of anxiety, grief, and self-discovery with sensitivity and depth. Zumann made a cameo in the
Netflix series
Sense8 (2015) and in Season 4 of
NBC's
Chicago Fire (2016). == Filmography ==