Developed and maintained two commercial web applications used by real clients, contributing across the full development lifecycle. I designed and implemented RESTful APIs using Node.js and Express, and modeled and managed relational databases with PostgreSQL. I built a complete order tracking system for clients, along with invoice upload and visualization features. Additionally, I developed a product management system with full CRUD operations. I also led the migration of the frontend from React to Next.js, improving overall performance and SEO optimization.

Software engineering