About
I started writing code to automate my college attendance spreadsheet and never really stopped automating things. Over eight years I've moved from scrappy startup monoliths to designing systems that process millions of transactions a day. I care most about observability, clear failure modes, and APIs that are a pleasure to integrate against. When a system is well-designed, on-call gets quiet — that quiet is the goal.
Make complex systems feel simple for the people who build on top of them.
Principles: Reliability · Clarity · Pragmatism · Mentorship
Experience
8 years building payments, data, and platform infrastructure
Senior Software Engineer
2022 – PresentRazorpe (fintech)
Lead the payments reliability pod. Cut p99 settlement latency 62% and drove a zero-downtime ledger migration across 40M accounts.
Software Engineer II
2019 – 2022Swiggy
Built the real-time order-tracking pipeline (Kafka + Flink) serving 1M+ concurrent sessions during peak.
Software Engineer
2016 – 2019Freshworks
Shipped the public REST + webhook platform used by 10k+ developers.
Education
B.Tech, Computer Science — NIT Trichy 2016
Certifications
CKA — Certified Kubernetes Administrator — CNCF 2023
AWS Solutions Architect – Professional — AWS 2021
Projects & publications
ledgerd
Open-source double-entry ledger engine in Go. 3.4k stars, used in production by 5 fintechs.
Flux Rate Limiter
Distributed token-bucket limiter with Redis + Lua. Sub-millisecond decisions at 200k req/s.
obsctl
A CLI that turns OpenTelemetry traces into readable incident timelines.
schema-diff
Zero-downtime Postgres migration planner. Catches lock-escalation risks before they page you.
References
“Arjun is the engineer other engineers escalate to. He left our payments stack more reliable and far easier to reason about.”
“His PRs to our OSS project were the cleanest we've reviewed — tests, docs, and a design note every time.”