Berhampore, West Bengal, India  |  +91 7585814061  |  gourab574@gmail.com  |  LinkedIn  |  GitHub

Software Developer with hands-on experience engineering backend systems and Generative AI applications using JavaScript, TypeScript, Node.js, PostgreSQL, Redis, LangChain.js etc. Have experience architecting production infrastructure, integrating RAG workflows, and delivering end-to-end full-stack solutions across internship and freelance engagements.

• Netaji Subhash Engineering College — Kolkata, India
  Bachelor of Technology in Information Technology (B.Tech IT) • CGPA: 8.22 / 10.0 • Expected 2027
• Higher Secondary (Class XII) — WBCHSE • 77.2% • 2022
• Secondary Examination (Class X) — WBBSE • 84.0% • 2020

• Languages: Java, JavaScript (ES6+), TypeScript, SQL, HTML5/CSS3
• Backend & System: Node.js, Express.js, RESTful APIs
• Frontend & UI: React.js, Next.js, Tailwind CSS, Axios
• Databases & Cache: PostgreSQL, MongoDB, Redis
• AI & Machine Learning: RAG Pipelines, LangChain.js, Vector Databases (Qdrant, Pinecone), LLM Integration, Agentic AI
• Tools & Platforms: Docker, Git, GitHub Actions (CI/CD), Postman, Render, Vercel, Cloudinary, Azure
• Core Fundamentals: Data Structures & Algorithms (DSA), OOP, Database Management Systems (DBMS)

Remote • Full-stack engineering, Real-time telemetry & AI integrations

• Constructed real-time telemetry and event infrastructure using WebSockets and Node.js, supporting 500+ concurrent live participants during high-traffic sessions.
• Architected centralized user activity tracking system as a plug-and-play module for seamless integration across multiple web platforms.
• Built an autonomous profile-editing assistant with LLM APIs, decreasing manual user onboarding time by 40%.

Client Engagements: Bihonginee & ArchTales • Node.js, React, Next.js, Firebase, Express, Cloudinary

• Built and deployed a full-stack travel agency platform for Bihonginee that handles website data management, catalog controls, and over 100 monthly bookings. (available at bihonginee.in)
• Developed ArchTales, a portfolio website for an architect featuring a project showcase, an integrated blog, and a contact form, complete with an administrative dashboard to manage blog posts, upload new works, and review client inquiries. (available at archtalesbyak.in)
• Configured Edge CDN caching and asset minification, accelerating page load speeds by 35% and raising Google Lighthouse scores to 92+.

React.js, Node.js, Express.js, PostgreSQL, MongoDB, Redis, LangChain.js, Groq API, Google OAuth

• Engineered an ingestion pipeline parsing 50k+ transcript token via LangChain.js to generate structured 5-module curricula and automated exams.
• Decoupled inference workloads using a Redis message broker to prevent HTTP timeouts, sustaining 99% job completion rates.
• Configured a round-robin key rotator across distributed Groq endpoints, preventing 429 rate-limit errors while sustaining 30+ requests/min.
• Structured a dual-database persistence layer: stored tamper-proof credential records in PostgreSQL while persisting schema-free lecture notes in MongoDB.

TypeScript, Node.js (ESM), GenAI, RAG Data Ingestion

• Authored and published an open-source npm library standardizing multimodal document ingestion into unified interfaces for RAG pipelines and LLM workflows.
• Implemented source-specific loaders (PDF, DOCX, CSV, JSON, TXT, Web).
• Designed an extensible abstract BaseLoader architecture enabling developers to implement custom extraction pipelines with strict TypeScript type safety.