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Where others see
limits, I see
possibilities.

I’m a software developer and Computer Engineering and Computational Systems student, currently developing my skills across software, systems and technology. I work on web applications and digital products, exploring different approaches to development, architecture and problem-solving.

LJ

Leonardo Júnior

Developer

Better
Code.
Bigger
Dreams.

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About Me

Leonardo Junior do Rosário 19 years old

I’m a Computer Engineering and Computational Systems student and software developer. I work on web applications and digital products, contributing to different stages of the process, from architecture decisions and technology selection to implementation. My background combines software development with practical experience in operating systems, hardware, and electrical work. Before pursuing computer engineering, I gained professional experience in the electrical field, which contributed to a practical approach to analysing and solving technical problems. I’m particularly interested in software architecture, web development, systems, cybersecurity, and emerging technologies. Alongside my academic studies, I develop personal projects and contribute to products from their initial conception through implementation, with an interest in understanding not only how a solution is built, but also the technical decisions behind it. I’m continuously developing my skills in programming and software engineering, with a current focus on areas such as data structures, systems architecture, application development, and cybersecurity.

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Years

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Projects

0%

Dedication

Tech Stack

HTML
CSS
JavaScript
React
Next.js
Tailwind CSS
Node.js
Express
Git
Github
Docker
PostgreSQL
Python
Java
MySQL
The standard is a starting point, not a destination.
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Projects

Featured Projects

A selection of projects I have developed or contributed to, covering web development, systems, and other technical areas.

Byfome delivery platform

Byfome

Delivery Platform

CV Business Solutions corporate website

CV Business Solutions

Business Website

SIGB Library System

SIGB (Library System)

Desktop Application

Reversi Game

Reversi Game

Desktop Application

Skills

Technologies & Tools

I work with modern technologies to build scalable, fast and secure applications.

Frontend

  • HTML
  • CSS
  • JavaScript
  • React
  • Next.js
  • Tailwind CSS

Backend

  • Node.js
  • Express
  • Java
  • Python

Database

  • PostgreSQL
  • MySQL
  • SQLite
  • Supabase

Tools & Others

  • Git
  • GitHub
  • Docker
  • VS Code
bash
$
Code
Design
Problem Solving

Experience

My Journey

A timeline of my academic, technical and professional development across software, systems, hardware and electrical work.

  1. 2023

    Electrical & Technical Work

    Started working in the electrical field at 15 and developed practical experience in electrical installations, wiring and technical problem-solving. This experience became an important part of my broader technical background.

  2. 2025

    Computer Engineering & Computational Systems

    Studying Computer Engineering and Computational Systems, developing foundations in programming, mathematics, digital systems, electronics, algorithms, computer architecture and scientific research.

  3. 2025

    Software & Personal Projects

    Developing and contributing to software projects across web development, systems and digital products, using different technologies and approaches while continuing to strengthen my programming and engineering skills.

  4. 2026

    CTO & Co-founder — ByeFome

    Working on the technical development of ByeFome, a delivery platform being developed for the Cabo Verdean market. My role includes contributing to architecture decisions, technology selection, product development and the technical direction of the platform.

There is always more to learn, build and understand.

— L.J.

Achievements

So far.

A few highlights from my journey so far.

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Projects Completed

0+

Year of Active Learning

0

Live Product

Skills Ahead

Cabo Verde

Mindelo

Better
Bigger
Opportunities.

Contact

Let's build something great.

Have a project in mind, a collaboration idea or just want to say hi? I'd love to hear from you.

Full Stack Developer