Backend engineer, mostly interested in what happens when things fail.

I’m Abhinav, a backend engineer in Hyderabad. At Khumbu Systems I design and own the integration services between ordering platforms, Uber Eats and RBI’s apps, and the point-of-sale systems of Burger King, Popeyes, Tim Hortons, Chipotle and Wingstop: about 12,000 stores across 17 markets. Orders, quotes, cancellations, pricing, and the menu and store-status syncs that keep them all agreeing.

Integration work teaches you that every partner retries, every queue redelivers, and every dependency eventually times out. Most of what I enjoy is in that layer: idempotent consumers, caches that degrade to misses rather than errors, shutdown ordering, failover. I led our cache migration to ElastiCache Serverless, and wrote up what it taught us.

To go further than my day job needed, I built a real-time multiplayer chess platform as a production system: a clock that cannot drift, moves that apply exactly once under contention, games that survive a rolling deploy, and a written report behind every number I quote about it.