GridPulse
Live timing for endurance racing: three timing systems on three different clocks, unreliable trackside internet, and every phone in the paddock expecting the green flag at the same moment.
A real-time pipeline designed around how it fails: each audience degrades differently, spare capacity waits on standby, and the whole system was load-tested at 50 times the expected viewers before race weekend.
Millions of messages delivered across multi-day race weekends, for a running cost of roughly $100 a month.