Backend engineer with 5+ years building production systems at TymeX, Flipkart, and Wallero. I work primarily in Python and Java — designing microservices for ad delivery, payment flows, and data infrastructure where reliability and latency matter. Most of my work sits in the unglamorous parts of backend engineering: idempotency, retries with jitter, queue design, cache invalidation, and the failure modes that only surface at scale. I write about these on LinkedIn because the lessons are usually invisible until something breaks at 3 AM. What I'm focused on right now: —> Designing backend microservices at TymeX (digital banking platform) —> Building a free, open system design study app — no paywall, no signup —> Experimenting at the AI engineering edge: agents, LLM tooling, and automating engineering workflows Stack you can reach for: Python, FastAPI, Django, Java (Spring Boot, Dropwizard), Redis, MySQL, PostgreSQL, Kafka, Kubernetes, GCP, AWS. — Pavan