Building scalable systems & agents.

Hi, I'm Mehul Arora. I build production-grade web applications, highly concurrent systems, and AI-driven agents.

Mehul Arora
Available for work
...

About Me

I am a full-stack developer based in India, obsessed with building high-performance software.

My journey started with a fascination for how systems scale. I don't just build UI; I architect complete solutions—from robust Node.js backends and real-time WebSockets to fluid, beautiful React frontends.

I recently built a streaming AI chat app (QuarkAI) using Next.js and Postgres, and an AI Agent (Arbiter) that cross-validates LLM responses for accuracy.

When I'm not coding, I'm usually diving into system design patterns, playing video games, or making content about software engineering on YouTube.

Capabilities

A comprehensive toolkit for building robust, scalable applications.

Frontend Core

React
Next.js
Tailwind CSS
TypeScript
TanStack Query
Zod

State & Fullstack

Zustand
Web Sockets
Node.js
Express
Better-Auth
Vercel
PostHog

Databases

PostgreSQL
MongoDB
Redis
Prisma
Drizzle
Mongoose
Qdrant
Pinecone
Cloudflare R2

AI & Infrastructure

OpenAI SDK
Vercel AI SDK
AI Engineer
Docker
Git
Octokit
BullMQ
Inngest
CI/CD Pipelines
LangChain

Selected Work

A collection of my recent projects ranging from AI agents to real-time high-concurrency systems.

Arbiter
Live

Arbiter

Multi-model LLM orchestrator that fans a single prompt out to five providers in parallel and synthesizes one answer through a dedicated evaluator model.

Next.js 16React 19TypeScriptDrizzle ORMPostgreSQLGoogle OAuth (PKCE)Server-Sent EventsZod
Personic
Live

Personic

A persona-grounded AI mentor agent that channels the teaching styles of two well-known coding educators, built on the OpenAI Agents SDK with a custom guardrail layer.

OpenAI Agents SDKExpressReact 19ViteTanStack RouterTailwind CSSThree.jsZod
TalwinderCSS
Live

TalwinderCSS

A zero-dependency CSS utility engine published to npm with a Hindi-inspired class-naming convention, packaged with an interactive documentation and playground site.

JavaScriptnpm PackageReact 19ViteTanStack RouterTailwind CSSThree.js
QuarkAI
Live

QuarkAI

A streaming AI chat app with token-by-token rendering, durable Postgres-backed history, and per-conversation model and system-prompt overrides.

Next.js 16TypeScriptPostgreSQLPrisma 7ClerkVercel AI SDKTanStack Query

Content

I occasionally share deep dives into software engineering, architecture, and building AI agents.

How I Made My Own Persona Bot
24:15

How I Made My Own Persona Bot

In this video I explain how I approached building a Persona Bot that talks exactly like Hitesh Sir and Piyush Sir. I also discuss why I used Manual GuardRails over OpenAI Agentic SDK's built-in guardrails.

#PersonaAI#Persona Bot#ChatBot

Certifications

Continuous learning and official recognitions from industry programs and hackathons.

GenAI Cohort 2026
2026

GenAI Cohort 2026

Issued by chaicode.com

GenAIchaicodechai aur codecohort2026
Codefusion Hackathon 2026
2026

Codefusion Hackathon 2026

Issued by Codeverse

hackathoncodefusion2026
Web Dev Cohort 2026
May 2026

Web Dev Cohort 2026

Issued by chaicode.com

developmentweb devcodingchaicodechai aur code

Let's build
something great.

Whether you have a massive system to scale, or an AI agent to architect, I'm ready to help.

Currently accepting new projects