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Biswajit Roy

@biswajitroy1

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I build full-stack React and Node.js products with AI-powered search and automation.

India

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What I'm looking for

I'm looking to build production full-stack products where I can own features end-to-end, work with React, Next.js, Node.js, and AI/LLM systems, and contribute within Agile teams.

At The Brandwick, I've built production Next.js applications, reusable React components, and API integrations that improved Core Web Vitals by 20% and reduced runtime errors by 25%.

I led full-stack development for Qoka, a UK digital marketplace serving 10,000+ active users, with smart-contract acceptance and real-time messaging. I also built Vastu Wisdom, an international booking and e-commerce platform handling 5,000+ monthly bookings.

I've integrated AI into practical products, including a RAG Knowledge Assistant with Pinecone retrieval across 10,000+ documents and a Resume Analyzer SaaS using OpenAI Function Calling. My work spans architecture through deployment, including CI/CD, testing, REST APIs, WebSockets, MongoDB, Redis, and AWS.

I'm focused on building fast, reliable user experiences with React, Next.js, Node.js, and LLM-powered systems.

Experience

Work history, roles, and key accomplishments

Full Stack Engineer

The Brandwick

Mar 2023 - Mar 2026 (3 years)

Architected Next.js applications with per-route rendering strategies, improving Core Web Vitals by 20% and achieving LCP under 2.5s. Built a reusable React component library, integrated Playwright tests into CI/CD, and implemented WebSocket real-time messaging.