Hey, I'm Manav Gadhiya

I’m a Backend Developer. I’m passionate about building scalable, high-performance, and complex systems. I love building things from scratch and understanding how they work under the hood.

I've won 7 hackathons, building projects ranging from an Automated on-chain Poker AI Agent to an authentication system designed to make on-chain onboarding seamless and intuitive.

Outside of coding, i spend time watching cricket, F1, astronomy and playing video games.

Tech Stack
Node.js
Express.js
Fastify
Next.js
Javascript
Typescript
React.js
TailwindCSS
PostgreSQL
Docker
Redis
AWS
Experience

Freelancer

June 2025 – Present

Predictify (800+ Users)

Telegram Bot for Trading on Polymarket

  • Architected and Developed a High Performance Telegram Bot enabling market/limit orders, stop-loss/take-profit and portfolio management.
  • Optimized performance and reliability to support 800+ active users and 200+ daily transactions, with real-time notifications and low-latency execution under production workloads.
  • Implemented advanced features such as AutoTrade (real-time copy trading), referral-based fee sharing, custom market subscriptions, and multilingual support (English + Chinese) to drive global adoption.
Link

Full Stack Developer

July 2025 – Present

SendIN

  • Developed a responsive frontend from scratch using React, TypeScript, TailwindCSS and TanStack, integrated Supabase Auth and Onramp Money SDK for KYC, and deployed on Vercel with optimized performance.
  • Architected the backend using NestJS and TypeScript, integrating Stellar Blockchain for wallets, Redis caching, and built automated CI/CD pipelines with GitHub Actions. Used AWS for various integrations (SNS for phone verification, SQS + Lambda for in-app notifications).
  • Integrated a 3rd-party service — Onramp/Offramp APIs with webhook updates, Supabase for authentication & database, Resend for transactional emails, and Passkey support — ensuring reliability and scalability across staging and production environments.
Live Website
My Projects

Rate Limiting Library

Published

A highly flexible rate limiting solution for Node.js applications.

  • Multi-framework Support: Seamlessly integrates with Express, Fastify & NestJS
  • Storage Options: Compatible with Redis, MongoDB & In-Memory stores
  • Quality Assured: 90% test coverage with comprehensive tests
  • Advanced Features: Dynamic rate limiting, configurable options, optional logging
Source Website npm

Decentralized Rendering System

A highly parallelized and cheap rendering platform

  • A distributed system to parallelize 3D rendering tasks across multiple worker nodes, reducing render time by 50x compared to single-node setups
  • Built a decentralized 3D rendering platform where users submit jobs via a web UI and rendering is offloaded to external contributors incentivized through Solana-based crypto rewards
  • Designed a serverless job orchestration pipeline using AWS SQS and Lambda to manage task scheduling, fault tolerance, and load balancing across untrusted worker nodes
Source Website

SolRPC

RPC Aggregator for Solana

  • Route requests through the lowest-latency RPC nodes based on real-time benchmarking — critical for games, high-frequency trading, and real-time apps.
  • It provides multiple load balancing options depending on your dApp usage and traffic. Currently there are 4 options - Round-Robin, Least Connections, Least Latency and Weighted.
  • Responses are automatically cached based on their nature. There are multiple caching methods - In-Memory, Redis and Memcached.
Source Website