Websites

I build web apps that work for people.

&

AI

and AI that works for the web.

Empowering products with smart, AI-augmented engineering — so businesses can grow.

Full Stack Developer · 4 years · Dextrasys, Trichy — from junior dev to Web & AI developer, shipping measurable wins the whole way.

MCP natural language → app actions

MCP-Powered SaaS Chatbot

AI

OpenAI + Model Context Protocol chatbot letting 2,000+ customers drive the platform in plain English.

RAG ChromaDB · FAISS · vectors

Help-Center RAG Pipeline

AI

Indexed an entire help center into a vector store — hallucinated answers, retrieved and retired.

<5s 10,000+ records

Bulk Excel Import Engine

Web

Rebuilt the import path from 30–60 seconds down to under five. A 90%+ reduction.

24/7 98% accuracy · human handoff

AI Support Bot

AI

Always-on support handling 10–15 requests weekly, gracefully escalating the edge cases.

+15% 10+ core pages revamped

Full UI/UX Revamp

Web

Redesigned the core product surface — and feature usage climbed 15%.

Mind
Gate live on Google Play

MindGate — Screen Time App

App

Behavioral nudges + usage analytics to make healthy digital habits engaging, not restrictive.

Wapp
AI Ollama · Node.js · local LLMs

WhatsApp AI Chatbot

In Progress

Autonomous multi-turn agent on locally-hosted LLMs — zero cloud API costs.

Good code gets me hired — but curiosity, character, and shipped products keep me in business.

Hariharan D
Hariharan D · Trichy, India

I'm Hari — a full stack developer who grew from junior dev to Web & AI developer at Dextrasys, and never stopped being curious.

These days I champion AI-augmented workflows for a team of ten, build MCP servers and RAG pipelines, and still care deeply about the unglamorous stuff: fast imports, reliable deploys, interfaces people actually use. Off-screen you'll find me practicing guitar or managing a small farm — both excellent teachers of patience and long-term planning.

0years shipping
0chatbot users
0% faster imports
0% bot accuracy

Technologies I've helped ship.

JavaScript✳Angular✳Node.js✳PHP✳CodeIgniter✳SQL✳jQuery✳HTML5✳CSS3✳
MCP✳OpenAI API✳Ollama✳RAG✳ChromaDB✳FAISS✳Vector Stores✳Prompt Engineering✳
REST APIs✳GCP✳App Scripts✳Meta Graph API✳Figma✳Playwright✳Git✳CI/CD✳Agile✳

What I do

Web

End-to-end product engineering — responsive Angular frontends, Node.js & PHP backends, REST API design, Playwright test coverage, and CI/CD pipelines that make releases boring (the good kind).

  • Full-stack web applications
  • REST API design & integrations
  • UI/UX revamps that move metrics
  • Pipelines, testing & code review

AI

AI features that ship to real customers — MCP servers, RAG pipelines over your own knowledge base, chatbots with human handoff, and AI-augmented dev workflows your whole team will adopt.

  • MCP server & chatbot development
  • RAG pipelines & vector stores
  • OpenAI & local LLMs (Ollama)
  • AI-augmented team workflows

The road so far.

  1. May 2026 — Present

    Web Application Developer — Web & AI

    Dextrasys, Trichy · MCP chatbot for 2,000+ customers, RAG pipeline, 24/7 support bot at 98% accuracy, AI workflows adopted by a team of 10.

  2. Oct 2023 — Apr 2026

    Application Developer

    Dextrasys, Trichy · 90% faster Excel imports, 40% faster CI/CD, UI/UX revamp (+15% usage), Meta Ads & Graph API integrations, Playwright coverage, led code reviews.

  3. Oct 2022 — Sep 2023

    Junior Frontend Developer

    Dextrasys, Trichy · Frontend features in the CodeIgniter stack, Figma-to-code, Git & Agile sprints.

  4. 2017 — 2022

    MCA — MIT (CDE), Chennai · BCA — Jamal Mohamed College

    Plus: Google certification — “Use AI as a Creative or Expert Partner.”