Software Engineer · Tech Lead

Software that holds up at scale.

I design, build, and run software end to end — event-driven backends in Go and Node.js, React frontends, and the Docker/Kubernetes infrastructure underneath — for products running across 400+ cities. Available for full-time roles and select freelance engagements.

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Based inKolkata, India
FocusFull-stack, Backend & DevOps
CurrentlyTech Lead @ Drivado
Available forFull-time & Freelance
Backend
GoNode.jsKafkaRedisPostgreSQLMongoDB
Frontend
ReactTypeScriptTailwind CSS
DevOps
DockerKubernetesNGINXGitHub Actions
5+Years experience
300K+Events processed / day
500+RPS supported
53%Infra cost reduced

Selected work

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Drivado

B2B Chauffeur Platform

Zone-based pricing, a Kafka event pipeline, and driver assignment for a mobility platform live in 400+ cities.

Node.jsKafkaRedis
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Gateway

Go API Gateway

Open-source reverse-proxy gateway with JWT auth, CORS, and Redis/Lua-backed rate limiting.

GoPostgreSQLDocker
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Locate

LLM Location Normalization

Cut manual location lookups from 50% of bookings to 1–2% using OpenAI, Mapbox, and LangSmith.

OpenAILangSmithRAG
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Writing

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Sep 20262 min read
Rate Limiting in Go with Redis and Lua: A Token Bucket That Doesn't RaceBuild an atomic token-bucket rate limiter in Go using a Redis Lua script, with working code, tests and failure modes.
Sep 20263 min read
JWT Refresh Token Rotation and Blacklisting in Go (with Redis)Short-lived access tokens, rotating refresh tokens with reuse detection, and a Redis blacklist for logout, with Go code.
Sep 20261 min read
Cutting manual location entry from 50% to 2% with an LLM pipelineHow we used OpenAI, Mapbox, and LangSmith to normalize multilingual and incomplete locations and reduce manual location searches from 50% to 1–2%.
Available now

Available for select freelance engagements.

Full-stack development, system architecture, and DevOps consulting for teams that need to move fast without breaking things.

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