After reading your post again....you need a 3D Modeler.

Titles of 3D modelers that should have the skill sets you are looking for:

3D Concept Artist
3D Modeler
Digital Artist (most have a 3D background)
Creative Director (these guys often have 3D skills)
Game Designer (most game designers I know have a heavy background in 3D modeling and presentations)

The best 3D modelers I have seen use 3D Studio Max. There are more programs out there. Just know that a 3D modeler will be proficient with one main 3D application. So you should either be prepared to purchase what they use or determine what you have or are capable of buying first.

My brother-in-law, Ethan McKinnon has been a 3D modeler for well over 10 years. He has developed his own games and has been recognized for his work in many publications. Here’s his portfolio: http://ethan-mckinnon.blackskullstudios.com/ He's currently looking for work. Check out his portfolio…he has some nice stuff. We worked together back in the day for Northrop Grumman. We installed Air Traffic Control simulators for 97 Air Force bases around the world which included the 3D models and graphics for simulators.

Hope some of this info helps you little guy.