One of the founders of Mm. Generally focussed [sic] on making things fun, and all the things required for that to happen i.e. everything.
Media Molecule website

David Smith is a technical director at Media Molecule. He co-founded the studio and co-created LittleBigPlanet along with Mark Healey, Alex Evans, and Kareem Ettouney. He and Healey are credited as the co-designers for the first and second games.