available-for-new-buildsRanchi, Jharkhand, India

// Software Developer

RohitTiwari

>

I am a software developer with experience in building web applications. I turn product ideas into fast, typed, and deployable web systems with a backend-first sense for reliability.

3+ yrsexperience
17+ yrseducation
TypeScriptReactNext.jsNode.jsNestJSPostgreSQLRedisDockerAWS
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focus // what-i-build

Where I do my best work

Three lanes I keep sharp across every build.
Backend systems
API layers, queues, sockets, auth, observability, and data contracts that are ready for production traffic.
Frontend System
Dense, fast interfaces with type-safe components, motion feedback, and layouts that stay calm under real content.
AI product work
RAG pipelines, LLM integrations, tool calls, and UX patterns that make model output inspectable.
stack // capabilities

The toolkit I reach for

A backend-first stack, end to end.
BackendNode JS/Express
FrameworkNode JS/Nest js
FrontendReact/Next.js
Relational DBPostgreSQL/MySQL
NoSQL & CacheMongoDB/Redis
ContainersDocker
CloudAWS
Web ServersNGINX/CADDY/TRAEFIK
EV ChargingOCPP/OCPI/OICP
IntelligenceAI/RAG
API / RealtimetRPC/GraphQL/WebRTC
work // featured

Selected case studies

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01
01 // CASE STUDY

mr-geoip

A production-grade, runtime-agnostic IP geolocation library for Node.js, Bun, and Deno. Features sub-millisecond in-memory lookups, configurable LRU caching, and an automatic HTTP fallback to public APIs.

Node.jsBunDenoTypeScriptGeolocation
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02
02 // CASE STUDY

mr-email-checker

Production-grade email validation & verification for Node.js with zero runtime dependencies. Provides syntax checking, MX lookups, SMTP mailbox probing, catch-all detection, disposable email checks, and typo detection.

Node.jsTypeScriptDNSSMTPValidation
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03
03 // CASE STUDY

OqronKit

A crash-safe, adapter-driven background job engine for Node.js. Provides task queues, distributed workers, schedulers, rate limiters, caching, and pub/sub built on a shared adapter layer allowing seamless scaling from in-memory to Redis or PostgreSQL.

Node.jsTypeScriptRedisPostgreSQLEvent-Driven ArchitectureObservability
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RT