Full-stack projects

Products built end to end across frontend, backend and infrastructure. Built by Chiranjeev Thomas, senior full-stack engineer, agentic ai.

“spicy veg snacks under ₹200”

LLM

{ diet: "veg",
  tags: ["spicy"],
  price: { lte: 200 } }✓ schema checked

Elasticsearch

At Grabbit

AI engineering
Full-stack

Conversational product search with an LLM

Shoppers describe what they want in plain language; an LLM turns it into an Elasticsearch query. Non-technical users can now run searches that used to need filters and exact keywords.

LLM
Elasticsearch
Spring Boot
React Native
AWS

How it works

Demo: in Grabbit app · Code: private

InvoiceChaser walkthrough: client pushback is detected, a late fee is calculated and a firmer escalation draft waits for the freelancer to approve

Live

AI engineering
Full-stack

InvoiceChaser — payment-recovery agent

Chases overdue invoices for freelancers through three escalation levels. Tools are gated per level, and nothing is sent without human approval.

LangChain
LangGraph
Groq · Llama 3.3 70B
FastAPI
React 19
MCP
Tavily
Vercel

How it works Live demo GitHub

Upskillgrow the skills roles ask for

Connectwith engineers at top tech companies

Get referredto roles there

0 → 1 as founding engineer20+ features+30% users

SaaS product

Product
Full-stack

DevReferral — developer career platform

Helps developers upskill, connect and get referred to roles at top tech companies. Built and ran it as founding engineer — 20+ features, the move to microservices, CI/CD and A/B-tested growth.

React
Next.js
Node.js
Express
MongoDB
TypeScript

Demo: no longer online · Code: private