Available for client work

Vinay Jain.

I build RAG-based AI systems and the full-stack products they live inside.

Currently
Founder, WebsiNova Technologies
engineers led
5
engineers led
AI platforms shipped
2
AI platforms shipped
languages localised
16
languages localised
Vinay Jain, software engineer and founder of WebsiNova Technologies
~/vinay
Elsewhere
01About

Tech lead turned founder.

I joined GreenFi as a Python and AI engineer, was promoted to Senior Software Engineer and then Tech Lead, and a year later became founding engineer on the same founder's second product.

As Tech Lead I ran a team of five across GreenFi, a climatetech ESG platform, and Lejit AI, a legal tech SaaS I architected from an empty repository — owning architecture, sprint delivery and client communication for both, including taking over the GreenFi codebase after the previous vendor left with no knowledge transfer. In June 2026 I started WebsiNova Technologies, where I take that work directly to clients: RAG-based AI systems, agentic workflows and microservice architecture, built across React, Next.js, Node.js, FastAPI and Django.

01
RAG & agentic AI
Retrieval pipelines over Milvus and ChromaDB, document Q&A, drafting and comparison flows served through FastAPI.
02
Backend architecture
Serverless AWS Lambda and EC2 services, Express and Django APIs, MySQL and Postgres schema design.
03
Full-stack product
React and Next.js front ends wired to typed APIs, multi-tenant role-based access, payments and auth.
04
Leading delivery
Sprint planning for a team of five, client communication, scoping and estimation from first call to release.
02Experience

Where I've worked.

Python and AI engineer to tech lead in thirteen months, then founding engineer on a product built from an empty repository. The short version is below; the long version is a good first call.

Jun 2026Present

Current

Remote, India

Founder

WebsiNova Technologies

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

Alongside client work I build Karyalo, our own contract management platform for law firms, in-house legal teams and business teams.

Oct 2025May 2026

Remote, India

Founding Engineer & Tech Lead

Lejit AI

Ran alongside GreenFi, for the same founder.

Lejit AI was the same founder's second product, and I joined at day zero as founding engineer, architecting the platform from an empty repository while continuing to lead GreenFi.

I built separate flows and role-specific access for lawyers, citizens, corporates, law students and law enforcement, RAG-based legal AI features for document Q&A, drafting, case comparison and legal opinions, and a multi-tenant law enforcement module with department hierarchy and role-based access. I integrated Razorpay payments, Twilio OTP authentication, and i18n across 16 languages.

Sept 2024May 2026

Remote, India

Tech Lead

GreenFi

  1. Python & AI EngineerSept 2024Mar 2025
  2. Senior Software EngineerApr 2025Sept 2025
  3. Tech LeadOct 2025May 2026

I joined GreenFi as a Python and AI engineer, grew into full-stack work, and was promoted to Senior Software Engineer and then Tech Lead, leading a team of five engineers across GreenFi and Lejit AI.

I took over the codebase after the previous vendor left with no knowledge transfer, reverse-engineered the system, and onboarded the team without missing a client deadline.

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.

Jul 2023Oct 2023

Remote

ML Engineer Intern

Intel Corp.

As an ML Engineer Intern I revamped and enhanced more than three ML models using TensorFlow, and deployed them so they integrated cleanly with the surrounding models rather than running in isolation.

Sept 2022Jan 2023

Remote

Backend Developer Intern

Creative Finserve Pvt Ltd

I led development of the company's CRM website and its various portals, writing the backend logic in Django. I designed and implemented the data models, database schemas and URL routing behind it.

03Toolkit

Tools I work in.

What I reach for day to day. A dot marks the ones I've shipped production systems with.

Programming Languages

  • Python
  • JavaScript
  • TypeScript

Frontend Development

  • Next.js
  • React.js
  • HTML
  • CSS

Backend Development

  • Node.js
  • Django
  • FastAPI
  • Socket.io

Large Language Models

  • OpenAI
  • Claude
  • Llama

Database Management

  • MongoDB
  • PostgreSQL
  • MySQL

DevOps/VCS

  • Docker
  • AWS
  • Git
  • GitHub

Miscellaneous

  • Firebase
  • Ubuntu

Nontechnical Skills

  • Problem Solving
  • Collaboration
  • Analytical Skills
04Work

Selected projects.

My own product at WebsiNova, the two platforms I led as tech lead, and the smaller things I build when a problem annoys me enough.

WebsiNova product

Karyalo: Contract Management Platform

WebsiNova's own contract platform, covering the whole loop from first draft to signature. It drafts from a team's own precedents, clause library and approved workflows, grades every clause against their negotiating playbook with the redline already written, then sends the contract out on a single revocable link and collects signatures bound to the exact version reviewed. Built for law firms, in-house legal teams and business teams.

  • Contract AI
  • Clause playbooks
  • E-signature
  • Document workflows
  1. 01
    Draftfrom your own precedents, approved wording and clause library
  2. 02
    Checkevery clause graded against your playbook, redline written
  3. 03
    Sendone revocable link, no account needed at the other end
  4. 04
    Signbound to the exact version reviewed, executed PDF to everyone
Public

GreenFi: Climatetech & ESG Platform

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
Public

Lejit AI: Legal Tech SaaS Platform

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

More work

04

FinSight: Bank Statement Analyzer

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
05

Supermarket Sales Analysis

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
06

Document QA System - RAG

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
07

DesiHelper: Your Indian Services Hub in the US

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
05Contact

Have something to build?

I take on full-stack and AI builds through WebsiNova Technologies — from scoping and estimation to delivery. Thirty minutes is usually enough to tell whether it's a fit.

Currently taking new client work · Mumbai, India · works across US and EU hours