Nirupam Changmai

About

Full-stack developer and AI engineer building production end-to-end applications for 5+ years (freelancing since college; 2+ years professional). Ships React/TypeScript/Next.js and Node.js/Python systems with GraphQL, integrating LLMs via OpenAI/Anthropic/Gemini using prompt engineering, function/tool calling, and RAG/structured outputs. MCA with ML & AI specialization; proven in remote, async teams.

Experience

• Senior Software Developer · TanTech LLC01-01-2026

  • Architected and shipped 3 React/TypeScript/Next.js applications end-to-end — including an internal employee-work dashboard, a QR-based attendance PWA with geolocation and leave workflows, and an autonomous job-application agent — with zero critical bugs in 6 months of production. • Designed AI integrations across OpenAI, Anthropic, and Gemini APIs: prompt pipelines, function calling, and structured response parsing that automate business workflows. • Integrated 5+ GraphQL/REST APIs into responsive interfaces, cutting data-fetch latency 40% via query optimization and async patterns. • Built a reusable component library and design system adopted across all 3 products, reducing UI development time 45%; improved app performance 35% (code splitting, lazy loading, memoization); maintained CI/CD on GitHub Actions.

• Web & Digital Operations · XO Clothing07-01-2025 – 01-01-2026

  • Rebuilt the company website for performance and cross-device compatibility — +25% organic traffic in 4 months. • Produced social content across 3 platforms — 10M+ views in a single month, +18% followers; cut client-communication turnaround 40%.

• Freelance Developer & Brand Operations · Self-employed / Watawi01-01-2025 – 07-01-2025

  • Delivered 4 full-stack projects end-to-end (Python, TypeScript, React, Next.js) — architecture, AI integration (OpenAI, Gemini prompt pipelines and function calling), testing, and cloud deployment for each client independently. • Managed product development and manufacturing for the Watawi apparel brand: drops, vendor coordination, sampling, and QC — design file to shipped garment.

• Full-Stack Developer · Riyum Innovations Pvt Ltd03-01-2024 – 01-01-2025

  • Owned the full feature lifecycle of a production LMS (React, TypeScript, GraphQL) serving 120+ users with zero downtime, from architecture through CI/CD deployment. • Built a real-time internal communication platform (React, Node.js, WebSockets) supporting 30+ concurrent users, replacing 2 third-party tools and cutting team response time 35%. • Wrote unit/integration tests (Jest, React Testing Library) that caught 15 critical bugs pre-release; created a component library that cut new-feature development time 45%. • Also shot/edited 25+ social videos, designed 30+ branded assets; trained in screen printing and color separation.

• Freelance Web Projects (Earlier) · Self-employed01-01-2020 – 12-31-2023

  Earlier: freelance web projects alongside studies, 2020–2024.

Education

• Amity University OnlineMCA, Machine Learning & AI Specialization
• Girijananda Chowdhary UniversityBCA

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