Hi there, I am 

Vinay Jain

Tech Lead & Founder, WebsiNova Technologies

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About

I'm Vinay Jain, a Tech Lead turned founder. I started as a Python developer, grew into full-stack development, and spent two years leading a team of 5 engineers across a climatetech ESG platform and a legal tech SaaS, owning architecture, sprint delivery, and client communication for both. In June 2026 I started WebsiNova Technologies, where I now provide full-stack and AI development services to clients directly. My focus is RAG-based AI systems, agentic AI workflows, and microservice architecture, and I build across the stack with React, Next.js, Node.js, FastAPI, and Django.

Full-Stack DevelopmentBackend ArchitectureAI/RAG SystemsChatbot DevelopmentAI ConsultancyCloud Architecture

Experience

Founder

@ WebsiNova Technologies

Jun 2026 - PresentRemote, India

After leading engineering for GreenFi and Lejit AI, I started WebsiNova Technologies to bring the same architecture, RAG and AI systems, and full-stack experience directly to clients, from initial scoping and estimation through to delivery.

Tech Lead

@ GreenFi & Lejit AI

Jun 2024 - May 2026Remote, India

I started as a Python developer on GreenFi, grew into a full-stack role, and became Tech Lead managing both GreenFi and Lejit AI for the same founder. I took over both codebases after the previous vendor left with no knowledge transfer, reverse-engineered the systems, and onboarded the team without missing client deadlines. On GreenFi, I maintained and extended a multi-module ESG platform covering carbon emission tracking, ESG ratings, sustainability reporting, media monitoring, and regulatory compliance, and built the RAG pipeline for ESG document Q&A using LLMs and Milvus, served through FastAPI, across a serverless AWS Lambda and EC2 backend with an Express 5 API and MySQL. On Lejit AI, I architected a legal tech SaaS from scratch with separate flows for lawyers, citizens, corporates, law students, and law enforcement, built RAG-based legal AI features for document Q&A, drafting, case comparison, and legal opinions, designed a multi-tenant law enforcement module with department hierarchy and role-based access, and integrated Razorpay payments, Twilio OTP authentication, and i18n support for 16 languages.

ML Engineer Intern

@ Intel Corp.

Jul 2023 - Oct 2023Remote

As a ML Engineer Intern, I had the invaluable opportunity to make a significant impact by revamping and enhancing more than three ML models using Tensorflow, showcasing my expertise in the field of machine learning and AI. I played a pivotal role in the development process by deploying these models, enabling seamless integration with other models, thereby enhancing the overall functionality of these models.

Backend Developer Intern

@ Creative Finserve Pvt Ltd

Sept 2022 - Jan 2023Remote

During my tenure as a Backend Developer Intern, I had the privilege of spearheading the development of the company's CRM website and various portals. I had developed backend logic for a CRM system using Django. I have also designed and implemented data models, database schemas, and handled URL routes, ensuring robust backend infrastructure.

Skills

Programming Languages

logo-Python

Python

logo-JavaScript

JavaScript

logo-TypeScript

TypeScript

Frontend Development

logo-Next.js

Next.js

logo-React.js

React.js

logo-HTML

HTML

logo-CSS

CSS

Backend Development

logo-Node.js

Node.js

logo-Django

Django

logo-FastAPI

FastAPI

logo-Socket.io

Socket.io

Large Language Models

logo-OpenAI

OpenAI

logo-Claude

Claude

logo-Llama

Llama

Database Management

logo-MongoDB

MongoDB

logo-PostgreSQL

PostgreSQL

logo-MySQL

MySQL

DevOps/VCS

logo-Docker

Docker

logo-AWS

AWS

logo-Git

Git

logo-GitHub

GitHub

Miscellaneous

logo-Firebase

Firebase

logo-Ubuntu

Ubuntu

Nontechnical Skills

logo-Problem Solving

Problem Solving

logo-Collaboration

Collaboration

logo-Analytical Skills

Analytical Skills

Recent Projects

project-GreenFi: Climatetech & ESG Platform

GreenFi: Climatetech & ESG Platform

Public

A multi-module ESG platform covering carbon emission tracking, ESG ratings for infrastructure projects, sustainability reporting, media monitoring, and regulatory compliance. As Tech Lead, I built the RAG pipeline for ESG document Q&A using LLMs and Milvus, served through FastAPI, across a serverless AWS Lambda and EC2 backend with an Express 5 API and MySQL.

FastAPI

AWS Lambda

Milvus

LLMs

MySQL

project-Lejit AI: Legal Tech SaaS Platform

Lejit AI: Legal Tech SaaS Platform

Public

A legal tech SaaS platform I architected from scratch, with separate flows and role-specific access for lawyers, citizens, corporates, law students, and law enforcement. Built RAG-based legal AI features including document Q&A, drafting, case comparison, and legal opinion generation, plus a multi-tenant law enforcement module with department hierarchy and role-based access.

RAG

LLMs

Milvus

Razorpay

Twilio

project-FinSight: Bank Statement Analyzer

FinSight: Bank Statement Analyzer

Public

FinSight takes bank statement PDFs, extracts transactions using AI, categorizes expenses, and shows spending insights through interactive charts. Analyzed data can be downloaded as CSV or PDF, no signup is needed, and no data is stored on the server.

Next JS

FastAPI

OpenAI

project-Supermarket Sales Analysis

Supermarket Sales Analysis

Public

The goal of this project is to perform data analytics on Supermarket sales data using various tools and technologies.

Python

Looker

Mage AI

BigQuery

GCP

project-Document QA System - RAG

Document QA System - RAG

Public

Document Q&A System, is designed to process PDF documents and provide concise answers to user queries based on the content of uploaded documents. It leverages advanced language models and document processing techniques to deliver accurate and contextually relevant responses.

Python

OpenAI

Langchain

Streamlit

ChromaDB

project-DesiHelper: Your Indian Services Hub in the US

DesiHelper: Your Indian Services Hub in the US

Private

DesiHelper is a comprehensive marketplace platform that allows service providers to create business listings, manage their services, and connect with customers.

Next JS

TypeScript

Python

FastAPI

Supabase

No templates, no shortcuts - just code, coffee, and a few too many git commits. Made by Vinay Jain.