Kapil Tiwari

I’m a senior software engineer with 14 years building and hardening high-stakes systems across fintech, healthcare, and large-scale consumer platforms. I’m strongest in high-throughput, low-latency environments where data correctness and uptime are not optional.

I’ve led rewrites and reliability work end to end—modernizing legacy systems while mentoring engineers around me. In my most recent role, I led a Go rewrite of a core banking transaction API, adding idempotency keys and reconciliation to close a recurring double-posting bug.

I focus on production realities: event-driven architecture, idempotency and reconciliation, and production observability. I’ve raised hot-path throughput by 35% while holding p99 latency flat, built Kafka pipelines with safe retries, and delivered Prometheus/Grafana dashboards plus error-budget burn-rate alerts that reduced MTTR from 42 minutes to 18 minutes.

I also bring full-stack depth when it matters—building internal React/TypeScript component libraries and improving EHR clinician experiences. Earlier, I rewrote an ambulatory EHR frontend, cut sync latency by 50% via gRPC integration work, and used GraphQL support for FHIR/HL7 exchange to reduce integration errors by 25%, while keeping P95 latency under tight targets.