Hey there! I'm Aryan Kumar 👋Full Stack Developer

I build educational platforms that've impacted 100K+ students at Chai Aur Code. 🎓
When I'm not doing that, I freelance—crafting SaaS magic with Next.js, React & Supabase, plus mobile apps that actually work on both iOS & Android.

📱My Expo apps are battle-tested on a small army of real devices
(Yes, I actually own multiple iPhones and Androids. It's a problem.)

Work Experience

Building scalable solutions and leading technical initiatives.

Open Builder (YC Backed) logo

B2B Builder & Software Developer

Open Builder (YC Backed)Remote

Nov 2025 - Present
Working directly with the CTO to build the platform and vibe coding tools. I help B2B clients finish their projects as well as help people coding on the platform.
ReactNext.jsNode.jsTypeScript
Chai Aur Code logo

Full Stack & Mobile Developer

Chai Aur CodeJaipur, India

Dec 2023 - Present
Serving as the technical backbone for Hitesh Choudhary sir's teaching initiatives, architecting comprehensive solutions for thousands of learners.
  • Built the MasterJi web platform with admin panels and user-facing pages using Next.js, React & PostgreSQL
  • Developed and deployed the MasterJi mobile app (15K+ downloads), managed version releases, and handled review processes for both App Store & Play Store
  • Designed complete UI: challenges, profiles, and custom multi-language code editor with syntax highlighting
  • Deployed push notifications at scale (Duolingo-style engagement)
  • Secured edge functions and implemented RLS to protect user data
  • Built production-ready apps for Udemy & YouTube courses—real projects students code along with and learn from
  • Quick to master new technologies and translate them into student-friendly content
100K+ Students Impacted
15K+ App Downloads
React NativeExpoReactTypeScriptNext.jsNode.jsPostgreSQLSupabaseRLSMongoDBRedisAWS S3Cron JobsSecurity

Freelance Full Stack & Web3 Developer

RemoteGlobal

Jan 2022 - Jun 2023
Delivered impactful web and blockchain solutions for a diverse global clientele. Built trading bots and smart contracts in DeFi for clients, and developed intelligent agents to trade smarter. Specialized in creating efficient, user-centric applications with advanced automation capabilities.
ReactNext.jsNode.jsSolidityEthereumWeb3.jsMongoDBAWS

Projects & Web3 Builds

A collection of full-stack applications, AI integrations, DeFi protocols, and Web3 solutions - with $40,000 in hackathon winnings across 8 competitions.

Source0: The All-in-One AI Chat Interface

Participant

T3 Cloneathon by Theo

A comprehensive, open-source AI chat platform designed for power users and developers. Source0 provides a unified interface to interact with a multitude of cutting-edge AI models, seamlessly integrating features like file attachments with RAG, real-time web search, persistent memory, voice-to-text input, and dynamic image generation.

Next.jsTypeScriptReactSupabasePostgreSQLTailwind CSSAI/MLMulti-ModelWeb SearchImage GenerationOpen Source

💰 Realistic Tweet Earnings Generator - Generate ultra-realistic X (formerly Twitter) payout screenshots in seconds! Perfect for social media flexing, pranking friends, or showing off your "earnings success." Create custom payouts that look completely authentic with fully customizable profile details, payout amounts, themes, and screenshot styles. 100% simulated, 100% convincing! Built in a day for entertainment purposes only.

ReactNext.jsTypeScriptTailwind CSSEntertainmentMobile UIScreenshot GeneratorSocial Media

deChat: AI-Powered DeFi Interface for Sonic

$7,500
Winner

Sonic DeFAI Hackathon 2025

A ChatGPT-style interface built specifically for the Sonic blockchain that enables users to interact with complex blockchain protocols through natural language. Features include token swaps, balance checks, staking, transfers, and cross-chain bridging via deBridge. Winner among 282 submissions in the Sonic DeFAI Hackathon 2025. Sonic awarded $5,000 USD for the winning solution, with an additional $2,500 USD from deBridge for seamless integration of their cross-chain protocol. *Note: Currently not operational - server temporarily taken down.*

Sonic BlockchainAINext.jsNode.jsExpress.jsdeBridgeAllora OracleDeFi

Announcements:

BrainPower 🧠⚡

Participant

Solana AI Hackathon 2024

An AI-powered blockchain agent that interacts with the Solana blockchain using natural language. Features include wallet operations, NFT management, token operations, DeFi trading, and liquidity pool interactions. Built with OpenAI's Assistant API and enhanced RPC capabilities via Helius. Participated in the Solana AI Hackathon 2024.

SolanaOpenAINext.jsExpress.jsMongoDBHelius RPCTypeScriptWeb3

Dynamic LP Assurance Hook

$3,500
Winner

Atrium Academy Cohort 3 Winner

A Uniswap Hook DeFi solution that provides dynamic insurance for liquidity providers using Arbitrum Stylus. Features adaptive protection based on market conditions and generates additional yield through flash loans, transforming how LPs manage risk. Built during Atrium Academy's intensive 8-week cohort program, which required writing smart contracts in Rust for Stylus - a new paradigm enabling WebAssembly-based contracts on Arbitrum.

Partners:

Mohak Gupta

Blockchain Developer & Security Researcher

RustArbitrum StylusDeFiSmart ContractsUniswap V4Atrium Academy

Announcements:

Superfluid Swapper

$8,000
Winner

PancakeSwap Hookathon 2024 Winner - 3rd Place

An advanced hook mechanism that enhances the decentralized trading ecosystem by introducing dynamic fee adjustments in liquidity pools. Leverages zero-knowledge proofs for greater transparency and efficiency to optimize liquidity provider returns and reduce impermanent loss on PancakeSwap.

SolidityPancakeSwapBSC TestnetDynamic FeeZK Proofs

Announcements:

Solana DSCVR One Voting Platform

$1,000
Winner

DSCVR Solana Track 2024 Winner - 4th Place

Streamlined on-chain gaming interactions with a web app built on Solana. Enhanced transaction throughput with the Anchor framework to deliver a responsive and engaging experience.

SolanaRustAnchor FrameworkBlockchain

Announcements:

Subis

$10,000
Winner

Chainlink Blockmagic 2024 Winner

A decentralized subscription platform leveraging zksync's Native Account Abstraction for seamless, gasless user payments. It features automated monthly billing and real-time USD-based subscription pricing powered by Chainlink Price Feeds, offering a smooth, blockchain-enabled subscription experience.

ReactNext.jsBlockchainzksyncChainlink

Announcements:

Glitch Messenger

$5,000
Winner

Appwrite Hackathon 2023 Grand Winner

A comprehensive messenger platform with an inbuilt task manager for hackathon teams. Utilized Appwrite's backend-as-a-service for real-time group chat and direct messaging functionalities. This was my second hackathon ever, and the judges called me their 'clear favorite' in the winner announcement 🙌 - this is where I truly fell in love with development and being appreciated for the solutions I build.

ReactNext.jsAppwriteReal-timeTask Management

Announcements:

Blockwave

$1,000
Winner

Spheron Hackathon 2023

A web3-based social media platform utilizing ERC-721 for profile picture NFTs and ERC-1155 for ticket booking, allowing multiple tickets under a single NFT.

Web3EthereumNFTReactSolidity

A tool for backing up private and public GitHub repositories using ECS and GitHub OAuth. Ensures secure and efficient backup of repositories to GitHub.

AWSECSGitHub APIOAuthNode.js

About

I architect and build high-performance applications, with a detailed focus on UI/UX that consistently impresses my clients.

At Chai Aur Code, I develop comprehensive student management systems and full-stack applications for Hitesh Choudhary's teaching initiatives. I architect platforms like MasterJi and Coding Hero—complete CMS solutions with testing, peer reviews, and progress tracking for over 100,000 students.

As a freelancer, I architect full-stack Web2 and Web3 solutions. My expertise includes mobile apps (React Native & Expo), AI wrappers, smart contract development, and scalable SaaS platforms. My mobile apps get battle-tested on a small army of iPhones and Androids for a flawless experience.

Technologies & Skills

TypeScript
Go
Python
Java
JavaScript
SQL
Next.js
React.js
React Native
Expo
Node.js
Express.js
MongoDB
PostgreSQL
Supabase
DynamoDB
Redis
AWS
Docker
Kubernetes
AWS CDK
Solidity
Web3.js
Ethereum
Blockchain
AI/ML

Let's Work Together

I'm always interested in new opportunities and interesting projects. Whether you have a question or just want to say hello, feel free to reach out.