User Portlet
Disclaimer: all things I say are my own, and not said on behalf of my employer, my family, or my favorite pub.
I am responsible for a number of teams handling build to deploy for Nike's consumer-facing content.
As for Mathematica, I've used it sparsely since the 90s, and fairly densely over the last couple years. Having been involved in a side project in partnership with launch.org, I built and helped design a business simulator in the sustainability space which helped to make real the expected challenges of the next decade, as well as processes and innovations to help address them. I programmed the game engine in the Wolfram Language, improving performance and scalability greatly over a previous version.
Gaming is a passion of mine, and I'd love to hear how you are doing sims in or out of MMA.