Open to opportunities

Kalef Villanueva

@kalefvillanueva

Message

I build full-stack web applications with React, Node.js, REST APIs, databases, and AWS.

Spain

Message

What I'm looking for

I'm looking to grow as a full-stack developer in an Agile environment, contributing to web applications while developing Vue 3, automated testing, and cloud development skills.

I've built end-to-end web applications using React, Node.js, Express, MongoDB, SQL, and REST APIs, connecting frontend interfaces, backend logic, and data persistence.

At Hospital Universitario 12 de Octubre, I developed and improved web solutions supporting hospital services and processes. I worked across HTML, CSS, JavaScript, PHP, and SQL/MySQL, resolving incidents and evolving functionality for real operational needs.

My projects include Joyería Victoria, a full-stack e-commerce application with authentication, catalog management, REST APIs, and MongoDB persistence; Travel Genie, a serverless AWS application integrating generative AI through Amazon Bedrock; and a modular, responsive React and TypeScript portfolio deployed with Vercel.

I'm currently studying software development at 42 Madrid and continue building toward Vue 3, automated testing, and Agile ways of working. I value clean code, problem-solving, continuous learning, collaboration, and autonomy.

Experience

Work history, roles, and key accomplishments

Desarrollador de Aplicaciones Web

Hospital Universitario 12 de Octubre

Oct 2024 - Dec 2024 (2 months)

Developed and improved web solutions to optimize hospital services and processes. Worked with HTML, CSS, JavaScript, PHP, and SQL/MySQL, participating in interface, application logic, and data access.

HTML CSS JavaScript PHP SQL MySQL