Roshan – Developer

Roshan Sahu

Full-Stack MERN Developer

I build scalable web applications, AI-powered SaaS products, and modern digital experiences focused on performance, usability, and clean architecture.

Currently building DocumateAI – a RAG-based AI document chatbot enabling contextual conversations with PDFs and documents using semantic search and vector embeddings.

Over the past years, I’ve worked on production-grade products across AI SaaS, e-commerce, finance, and sports industries, focusing on scalable architecture, performance, and modern user experiences.

Find more of my work on @hloRoshan, explore my code on GitHub, or reach out via email

Projects

AI-powered document chatbot enabling contextual conversations with PDFs, DOCX files, and notes using Retrieval-Augmented Generation (RAG), semantic search, and vector embeddings.

Built contextual AI document Q&A using RAG architecture
Implemented vector embeddings and semantic retrieval pipelines
Designed scalable indexing for fast document understanding
Supported PDF, DOCX, and text-based uploads
Built responsive real-time chat interface with modern UI/UX
Optimized low-latency AI response workflows

Next.js
TypeScript
Tailwind CSS
Node.js
Express.js
MongoDB
RAG Architecture
Vector Embeddings
Semantic Search
AI Integration
File Upload Handling
shadcn/ui

Experience

Expert It Services

Delivered production-grade web applications across e-commerce, fintech, sports, and service industries using modern MERN stack technologies.
Built and optimized the frontend architecture for finusmart.com, improving responsiveness, accessibility, and SEO performance for a personalized insurance and wellness platform.
Developed a scalable e-commerce experience for meatwaala.com with optimized product catalog management, responsive UI, and seamless customer ordering workflows.
Implemented sports management and school-ready athletic modules for tritonsportsline.in, enabling structured athlete development and efficient program management.
Designed modern, responsive user interfaces and interactive dashboards using Next.js, TypeScript, Tailwind CSS, and Motion to deliver smooth cross-device experiences.
Collaborated on full-stack feature development using Express.js and MongoDB, handling real-time data processing, API integrations, and application performance optimization.
Participated in deployment workflows using AWS and Vercel, ensuring reliable production delivery and scalable hosting infrastructure.