I joined the Edge Foundation team @WalmartLabs about a year ago. We help manage the HTTP ingress flow (CDNs, WAF, Tier 1/2 proxies and LBs, etc) for all Walmart eCommerce properties. Our custom proxy also does some basic and not so basic frontend optimizations (js and css compression/minification/bundling, image resizing, url rewrites, etc) and handles a large portion of routing requests to backend servers.

This is a great write up from earlier this year, and from the screenshots it looks like it was before our new site design launched. That was a pretty massive modernization effort that included some site performance improvements. We also now have a sizeable team (100+) focused on some of the other details from the article. Brotli for instance went into A/B testing this month.

There are a lot of moving parts and changing priorities at a company the size of Walmart, and development and deployments can be slower than at smaller shops. But there definitely is active progress on improving our site speed.

And if you like working on any of these kinds of systems we are always hiring!