Vigneswaran R

I build full-stack apps
& AI systems

Full Stack MERN Developer & AI Software Engineer with 4 years shipping responsive web apps and intelligent, LLM-powered systems — RAG, multi-agent workflows & automation that run real business operations.

◷ 4 yrs experience ⚲ Trichy, India ● Available for work
Portrait of Vigneswaran R, Full Stack MERN and AI Software Engineer
VIGNESWARAN

What I build with
across the full stack

4+Years building
4Shipped products
MERN · AI · Automation

Frontend

  • React.js
  • JavaScript (ES6+)
  • Redux
  • TanStack Query
  • Framer Motion
  • MUI / Chakra
  • React Native
  • Responsive UI

Backend

  • Node.js
  • Express.js
  • MongoDB
  • SQL / Supabase
  • JWT Auth
  • Rate Limiting / CORS
  • API Optimization
  • Mongo Indexing

AI & Automation

  • RAG Architectures
  • Multi-Agent Systems
  • Claude / OpenAI / Gemini
  • Prompt Engineering
  • n8n Workflows
  • Qlik / ETL

Integrations & Tools

  • Payment Gateways
  • CRM Integrations
  • GitHub
  • Lovable / Bolt
  • Ollama (local LLM)
  • Data Extraction

Featured Work

End-to-end products I built at YOZY Technologies that automate real business workflows.

devozy · pipeline
Build
Test
Scan
Deploy

Devozy

DevOps PlatformFull Stack

YOZY’s flagship DevSecOps SaaS. Built full-stack CI/CD dashboards and backend APIs for environment provisioning, pipeline management & multi-cloud deploys — integrating Jenkins, SonarQube, Docker & Kubernetes.

sales-genius · billing
Basic
Pro
Scale
↻ recurring⇅ prorate✓ retry

Sales Genius

PaymentsBackend + n8n

Payment & subscription automation. Designed gateway integration handling upgrades, downgrades & mid-cycle plan switches with proration — orchestrated billing flows in n8n to cut manual work and lift payment success.

apply-genius · agent

AI tailor

Apply Genius

AI AgentsAI Engineering

AI-powered resume optimization. Built content-generation agents that analyze a job description and tailor summary, skills & cover letter — refined prompt strategies to keep output professional and keyword-aligned.

contentgen · chat
keyword ideas for "mern stack"?
12 clusters · 340 terms ✦
#serp#volume#intent#gap

ContentGenAI

RAG + SEOAI Engineering

AI-driven SEO research tool. Built a chatbot for automated keyword research delivering ideas, related terms & ranking insight, powered by an n8n workflow that runs competitor analysis and content recommendations.

Experience

YOZY Technologies

Full Stack MERN Developer & AI Software Engineer

Jan 2021 — Present Trichy, India
  1. 01

    Devozy — DevOps Accelerator

    Flagship SaaS · DevSecOps & CI/CD

    Built full-stack features in React + Node/Express: CI/CD dashboards, environment provisioning and deployment APIs integrating Jenkins, SonarQube, Docker & Kubernetes.

  2. 02

    Sales Genius — Payment Automation

    Subscriptions & billing

    Implemented payment-gateway integration for upgrades, downgrades & plan switches with proration, and orchestrated recurring billing + failure-handling flows in n8n.

  3. 03

    Apply Genius — AI Resume Platform

    LLM agents

    Engineered AI agents that tailor resumes & cover letters to a job description, with prompt strategies tuned for professional, keyword-aligned output.

  4. 04

    ContentGenAI — SEO Tool

    RAG + automation

    Developed an AI keyword-research chatbot and an n8n workflow generating SEO insight, competitor analysis and actionable content recommendations.

🎓

B.Tech, Information Technology

Kongunadu College of Engineering & Technology · 2016–2020 · CGPA 6.5

Let’s build something
genuinely useful

Have an idea, a role, or a workflow worth automating? Send a note — I read everything.