Hi, I'm Juan 👋
Junior Full Stack Web Developer & Designer
JJ

About

I’m an Information Systems Engineering student with hands-on experience in Full Stack development. I’ve built systems using React, Node.js, Spring Boot, and Python, and I thrive in collaborative environments where I can solve problems and learn new technologies quickly.

Skills

React
Bootstrap
HTML5
CSS3
JavaScript
UX/UI
Figma
Frontend Development
Node.js
Express
Spring Boot
Python
Java
SQLite
MySQL
APIs RESTful
Git
GitHub
GitLab
Postman
Linux
Axios
Microservices
MVC
Agile
Testing
My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex web applications. Here are a few of my favorites.

⭐ Car Agency: Backend System for Used Car Sales

Developed a backend system to manage test drives, vehicle tracking, and security for a used car sales agency. Implemented real-time vehicle tracking, ensured safety by preventing entry into restricted zones, and developed reporting and notification systems. The system is built using microservices with an API Gateway and integrates external APIs for geographic data.

Java
Spring Boot
Microservices
SQLite
APIs
GitHub
Agile Methodologies

⭐ Interactive Voice Response (IVR) System

Created an IVR system for credit card inquiry management. Initially built with Python and PyQt5, it was later migrated to Java with Spring Boot, and the frontend was updated to React.js. The system includes features like automated responses, call auditing, and Excel reporting, with data stored in MySQL.

Python
Java
Spring Boot
React.js
MySQL
PyQt5
GitHub
Trello
Linux

⭐ Node.js and React REST API for Resource Management

Developed a REST API for resource management using Node.js, Express, and Sequelize, with SQLite for the database. The project includes a React frontend for easy interaction with the API, supporting filtered searches and pagination.

Node.js
Express
Sequelize
SQLite
React
Axios
Bootstrap
GitHub
GitLab
Postman

Static Web Pages

Here are some of my first personal freelance projects. Mostly web static pages.

HTML5
CSS3
Photoshop
Web Design
GitHub
Random Variable Simulator

Random Variable Simulator

This project allows you to generate random variable values ​​according to a specific distribution, perform statistical tests (such as Chi-Square), and visualize the results using a graphical interface built with PyQt5.

Python
PyQt
Numpy
Pandas
Scipy
GitHub
Green AI

Green AI

This project is part of a practical project that seeks to quantify the carbon footprint generated by running an AI in Python code.

Python
CodeCarbon
Pandas
AI Llama 3
GitHub
GuitarLA

GuitarLA

GuitarLA is a web app for buying guitars online. It features a shopping cart where users can add or remove items, with real-time price updates and total calculation.

TypeScript
React
HTML5
CSS3
GitHub
Tip & Food Calculator

Tip & Food Calculator

Tip & Food Calculator is a simple and responsive web app that helps users calculate tips and split restaurant bills. Users can input the bill amount, choose a tip percentage, and divide the total among multiple people.

TypeScript
React
HTML5
CSS3
GitHub
Contact

Get in Touch

Want to chat? Just shoot me a dm with a direct question on WhatsApp and I'll respond whenever I can. You can also download my CV below.