He is known for playing the lead role of Jimmy Shive-Overly in the FX and FXX dark comedy series You're the Worst (2014), Roger Clifford in the 2019 film Detective Pikachu, and Kanduu / Slappy the Dummy in the Disney+/Hulu series Goosebumps (2023).
Geere graduated from Guildford School of Acting[2] and began his career on stage opposite Dame Judi Dench in Royal Shakespeare Company's All's Well That Ends Well.
Geere broke out to American audiences as Jimmy Shive-Overly, one half of the toxic and self-destructive couple at the heart of Stephen Falk's critically acclaimed comedy You're the Worst for FX and FXX which received four Critic's Choice nominations including Best Comedy.
[5] In 2019, Geere joined the global Pokémon universe as Roger Clifford in Legendary Entertainment/Universal Pictures live-action film Pokémon Detective Pikachu alongside Justice Smith, Ryan Reynolds, Kathryn Newton and Bill Nighy.
[6][7] Geere recurred on ABC's Modern Family as Haley and then Alex's love interest Professor Arvin Fennerman;[8] as Joel, the well-meaning but toxic lead in the BBC and Showtime's dark comedic limited series, Ill Behaviour, opposite Tom Riley and Lizzy Caplan;[9] Channel 4's This Way Up starring Sharon Horgan and Aisling Bea;[10] The First Team with Will Arnett;[11] and on A Million Little Things as Allison Miller's new roommate/love interest Jamie.