12+ Years of Experience6 Active Clients3 Continents30+ Projects Shipped
JR
Joaquin Rodriguez

Full-Stack Engineer specializing in Blockchain & DeFi

I help companies save thousands by applying AI-driven development workflows to their engineering processes. Faster delivery, fewer bugs, less overhead.

Services

How I Work

Flexible engagement models designed for teams that need senior engineering without the overhead.

AI-Powered Development

I integrate AI into every step of the development process — from code generation to testing and deployment. This means faster delivery, fewer bugs, and significantly lower costs for your team.

Dedicated Hour Packages

Embed with your team on a monthly retainer. I work async-first across time zones, communicate via Slack/Linear, and ship like a full-time engineer — at a fraction of the cost.

Blockchain & DeFi Solutions

Smart contracts, DEX integrations, multi-chain listeners, trading bots, token launches, and DeFi protocol development. Battle-tested in production.

Selected Work

Production Systems I've Built

Every project is a real production system serving real users. No tutorials, no toy projects.

Multi-Chain DeFi Trading Platform

Architected a full trading ecosystem: Go API processing swaps across 4 blockchain networks (ETH, BSC, Base, Polygon), real-time price tracking with Elasticsearch, Telegram trading bot, and admin dashboard. The system handles blockchain listeners, DCA strategies, and wallet management for hundreds of active traders.

Impact: 4 blockchain networks monitored 24/7 | Real-time price snapshots every 5 min | Hundreds of active users

Go
MySQL
Elasticsearch
Redis
Solidity
Telegram Bot
Next.js
WebSockets

Sports Video Analysis Platform

Built a complete video analysis platform for a European sports organization. Three interconnected apps — admin panel, player-facing app with canvas annotations, and HLS video conversion service. Includes staging/prod CI/CD, Stripe billing, and Sentry monitoring.

Impact: 3 production apps | Automated CI/CD pipeline | Canvas-based tactical drawing tools

Next.js
TypeScript
MySQL
NextAuth
AWS S3
Stripe
Playwright
Sentry

DeFi Launchpad & Token Platform

Developed a multi-chain DeFi launchpad for token launches with fixed-price pools, supporting both EVM chains and Solana. Integrated Privy wallet auth, Farcaster MiniApp SDK, and Coinbase CDP.

Impact: Multi-chain support (EVM + Solana) | Smart contract architecture | Farcaster integration

Solidity
Hardhat
Next.js
Privy
Wagmi
Solana
Farcaster

Fintech Payment Processing System

Built a payment reconciliation system for a fintech company: automated bank statement processing, Chrome extension for portal data extraction, duplicate detection, and bidirectional reconciliation with payment processors.

Impact: 50,000+ files managed | Automated reconciliation | Chrome extension for data extraction

Next.js
Prisma
MySQL
NextAuth v5
Chrome Extension
DigitalOcean

AI-Powered Video Analytics

Platform for video analytics with ML inference running in-browser via ONNX Runtime and FFmpeg WASM. Features canvas-based annotations, Stripe payments, self-hosted email, and internationalization.

Impact: ML inference in browser | Multi-language support | Self-hosted infrastructure

Next.js 16
React 19
ONNX Runtime
FFmpeg WASM
Supabase
Stripe
Konva

Crypto Buy Bot (Multi-Chain)

Multi-chain crypto buying bot with Telegram interface supporting EVM and Solana chains. Node.js bot with Go blockchain listener, BullMQ job queues, and Prisma ORM.

Impact: EVM + Solana support | Real-time blockchain listening | Queue-based architecture

Node.js
Go
Prisma
MySQL
Redis
BullMQ
Telegram
Solana
Technologies

Tech Stack

Blockchain & DeFi

SolidityHardhatEthers.jsViemWeb3.jsSmart ContractsDeFi ProtocolsMulti-chain (ETH, BSC, Base, Polygon, Solana)

Backend

GoNode.jsPython (Django)PHP (Laravel)Ruby on RailsExpressREST APIsWebSockets

Frontend

ReactNext.jsTypeScriptTailwind CSSFramer MotionReact Native / Expo

Data & AI

ElasticsearchRedisBullMQClaude APIGoogle GenAIONNX Runtime

Infrastructure

DockerPM2NginxGitHub Actions CI/CDVPS ManagementSupabaseAWS S3MySQLPostgreSQLMongoDB

Ready to Build?

I'm currently taking on new clients for dedicated hour packages. Let's discuss your project.

Book a Discovery Call
or email me atjoacorob@gmail.com