[1][2] His first work involving video games was chip music written for Atari computers under the moniker "Scavenger.

[4] He spent three years working in London for the Bitmap Brothers on sound design and music composition.

[6] He also led the composition of the soundtrack for Horizon Zero Dawn, along with The Flight and Niels van der Leest.

De Man composed the score alongside The Flight, Niels van der Leest and Oleksa Lozowchuk in the video game Horizon Forbidden West.

[8] Joris de Man won the Ivor Novello Award for Best Original Video Game Score for Killzone 2.