Hello, I love opengl since more than 20 years ago, and now webGL. I have master and PhD in graphics computing. So, I should be a good option. Since you want to do it on the web, may I use webGL?. Please, give me more details. I am a final developper (not intermediate like other freelancers...). So, I will do it by myself. Sometimes, I am contacted by other freelancer users (intermediate users) who get the project from the final client, and then I do the job. But, I would prefer to do it directly with you (the final client). Best Regards!.
PS: by the way, I am in the list of first 5000 best freelancers in the ranking of this site, over a million users...