Joan R.

I architected a multi-login platform using Next.js, Supabase, Electron, and Puppeteer that supports 2,900+ daily active users, has been sold to over 10,000 customers, and manages 800+ concurrent sessions every day. I designed and implemented the entire system architecture to be scalable, secure, and high-performance. As a Full Stack Developer with 8+ years of experience, I specialize in building cross-platform applications for web, desktop, and mobile. My expertise includes: 🛠️ Next.js, Supabase, Electron, Node.js, Puppeteer, Flutter 🌐 Modern, responsive frontends & robust backend systems 🔌 API development & third-party integrations ⚡ Automation tools, WhatsApp messaging platforms, custom payment gateways I deliver clean, maintainable code and design systems that perform flawlessly under heavy load. Passionate about building software that scales with your business needs. 🏆 Other projects I’ve developed include: WhatsApp automation systems serving thousands of businesses Custom multi-payment gateways for SaaS platforms Cross-platform desktop apps (Electron) for large-scale clients Web3 integrations using Solidity, Ethers.js, Hardhat & MetaMask Each project is built with a focus on security, performance, and long-term scalability, ensuring it meets the highest standards of quality.