Not one, but a group. IIRC, the starters were: Tdev, Estama, Gabester and LJFHutch. Then the team got bigger.
BeamNG was created by four gods their names were Thomas ficher, Lefteris stamatgiannakis, Gabe fink and Sam Hutchinson. I got this of the credits so that's why there are spelling errors in their names especially with Estama.