Bighnesh Sahoo

I build web applications, APIs and system integrations end to end.

WHAT I DO
- Full-stack web apps: Next.js, React, TypeScript, Tailwind on the front end; Node.js/Express REST APIs, WebSocket and SSE on the back end.
- Databases: MongoDB, MySQL, PostgreSQL. Deployment with Docker, Vercel and AWS.
- Integrations: MuleSoft (Mule 4, DataWeave 2.0), EDI X12 (850/855/810/856/997) over AS2/SFTP, ERP and OData APIs.
- AI features: LLM APIs (Gemini, OpenAI), RAG search with vector and graph databases, AI-generated content pipelines.
- Automation and data: Python scripts, Pandas, web automation with Puppeteer/Playwright/Selenium, Excel/CSV processing.
- AI training data: code writing and review for AI model training and evaluation, data and image annotation.

EXPERIENCE
Solution Consultant at an IT consulting firm, building MuleSoft integrations between trading partners and an ERP: order, invoice and shipment flows, data mappings, testing and production support. Earlier: backend API work in Node.js/Express, a full-stack internship (React, Node, MongoDB), and freelance work writing and reviewing code for AI model training.

RECENT PROJECTS
- DWCode: a live coding-practice platform built with Next.js, Express, MongoDB, Clerk auth and Gemini-powered problem generation.
- F1 Streaming System: live race data through Kafka into MySQL, served by a Node.js API to a real-time Next.js dashboard.
- NexusAI: notes synced into a Neo4j graph and Qdrant vector index for semantic (RAG) search with a local AI agent.

Winner of 6+ hackathons, 3-star CodeChef. B.Tech in Computer Science.

I communicate clearly, share progress regularly and deliver tested, documented code. Tell me what you need built.