Wendell User

I’m a Fullstack Developer focused on building and deploying complete web applications that prioritize performance, scalability, and user experience. I’ve worked on production-ready solutions with hands-on delivery—especially authentication systems, real-time data, and third-party API integrations.

Most recently, as a freelance Fullstack Developer, I developed and deployed a scheduling platform serving 80+ active users and processing 100+ monthly bookings. I built a real-time update system with automated WhatsApp notifications, and I implemented optimistic concurrency control to prevent double-bookings.

I also enjoy designing secure, user-friendly architectures—using PostgreSQL business logic and structured data models, plus authentication hardening like Supabase Row Level Security and OAuth (PKCE) with TOTP two-factor authentication. Through my projects, like TrackR and Nexus Dashboard, I keep pushing toward responsive interfaces, reliable data handling, and thoughtful automation.