$ cd ~/work/wod-pro-league
WOD Pro League
An online functional-fitness league with real-time leaderboards and live score submission. Built by the Zencloud team I was part of.
01//the problem
Competitive fitness online is simultaneous: athletes everywhere submit scores while everyone watches the leaderboard move. That's a low-latency, high-concurrency problem that has to feel instant.
02//the approach
A serverless AWS Lambda + S3 backend keeps cost proportional to load, while Redis and Socket.io push live leaderboard updates. Flutter mobile apps and a React web app give athletes and organizers the same real-time view.
03//what I built
Real-time leaderboards
Redis + Socket.io push score changes live to every athlete.
Serverless backend
AWS Lambda + S3 scale with demand instead of a fixed server bill.
Score submission
Athletes submit and verify scores in real time from the app.
// the impact
In the client's own words, published on Zencloud's website: "In our very first season, more than 600 athletes joined." This was Zencloud's client project, built while I was employed there.
// let's build yours
Have a product like this in mind?