Visual Effects is in my blood. I have spent a fair amount of my professional life involved with visual effects for many productions.
Being a Visual Effects Supervisor means to supervise all of the computer generated effects for a particular production. Depending on the size of the show it can mean supervising a few people and shots to hundreds of shots and dozens of artists. I love this kind of work, and am always on the lookout for that next great project.
A Visual Effects On-Set Supervisor is a little more focused than the Visual Effects Supervisor role. The On-Set Supervisor is available for the day-to-day shooting schedule of a production, and is charged with ensuring each shot is filmed in a way that the visual effects will be successful.
As a Visual Effects Artist, I have also completed hundreds of shots doing things like compositing, rotoscoping, wire removal, matchmoving, and other things. I really enjoy this work as well, and am always available to talk about helping out a production or studio as needed.
Check out LinkedIn and IMDb for more info.