I have been a professional game designer for over 20 years. Started my career in the halcyon days of 1996 at New World Computing. During that time I've worked for companies large and small, huge AAA projects and small independent mobile games.
I have experience in all aspects of game development from system design to level design. I've lead small teams of 1 game designer to large teams of 15 game designers.
If there is a thing that can be done in game design, I've done it.