👋 Hi, I'm Mateus!

I am a Backend Developer (Java 21, Spring Boot) and RESTful API Architect specializing in scalable and robust solutions, with expertise in complex statistical modeling and data analysis (Python/R, PostgreSQL). With 2,000+ hours of documented development experience, I build production-ready applications combining technical proficiency with over 10 years of methodological rigor, international project leadership (INRAE), and high-stakes team and budget management.

Currently focused on backend development with Spring Boot 3.5.3, creating scalable REST APIs with clean architecture, JPA/Hibernate, and microservices patterns. I also develop full-stack solutions combining React/Next.js frontends with Node.js/Spring Boot backends, all deployed to production environments.

Core Expertise: Spring Boot • Java • Python • R • React • TypeScript • PostgreSQL • Node.js • Docker • CI/CD

Let's connect! 🚀

• Advanced Spring Boot project with professional-grade architecture, demonstrating best practices in enterprise Java development. Latest updates Oct 2025.

• Modern Spring Boot ecosystem with Swagger documentation, Docker containerization, Kubernetes orchestration, JWT authentication, JUnit 5 testing, and ReactJS frontend integration.

• Production-ready REST API with Spring Boot 3.5.3 and Java 21. Features complete e-commerce domain model, JPA/Hibernate relationships, PostgreSQL integration, and live deployment on Render.

• Full-stack church management system with React, TypeScript, Node.js, and PostgreSQL. Implements event management, donation tracking, user authentication, and role-based access control.

• Document management system with React, TypeScript, Node.js, and Supabase. Features real-time updates with Socket.io, workflow tracking, metadata management, and professional logging.

• Multi-platform medical appointment system with React web app, React Native mobile app, and Node.js API. Deployed across Vercel and Render with SQLite database.

• TypeScript-based MCP (Model Context Protocol) server for NPM integration. Demonstrates expertise in protocol implementation and tooling development.

• Efficient YouTube video downloader utility built with Python and yt-dlp, featuring clean CLI interface and robust error handling.

• Comprehensive data science and machine learning projects including automated data analysis pipeline for environmental Big Data, facial recognition, transfer learning, and image recommendation systems. Built with Python/R, scikit-learn, OpenCV, and Jupyter notebooks, achieving 40% reduction in dataset processing time.

• Cross-platform desktop calculator with modern UI built using C++ and Qt framework. Demonstrates proficiency in desktop application development and object-oriented design patterns.

• Java • Spring Boot 3.5+ • Spring Data JPA • Maven
• Node.js • Express.js • JWT Authentication
• PostgreSQL • MySQL • SQLite

• React • TypeScript • Next.js • Tailwind CSS
• React Native • Expo

• Docker • GitHub Actions • Vercel • Render
• Git • Postman • VS Code

• Python • Pandas • NumPy • scikit-learn • Jupyter
• R • ggplot2 • Statistical Modeling

I'm an Early 🐤

🌞 Morning                908 commits         ██████░░░░░░░░░░░░░░░░░░░   23.18 % 
🌆 Daytime                1895 commits        ████████████░░░░░░░░░░░░░   48.37 % 
🌃 Evening                1062 commits        ███████░░░░░░░░░░░░░░░░░░   27.11 % 
🌙 Night                  53 commits          ░░░░░░░░░░░░░░░░░░░░░░░░░   01.35 % 

📅 I'm Most Productive on Tuesday

Monday                   668 commits         ████░░░░░░░░░░░░░░░░░░░░░   17.05 % 
Tuesday                  710 commits         █████░░░░░░░░░░░░░░░░░░░░   18.12 % 
Wednesday                686 commits         ████░░░░░░░░░░░░░░░░░░░░░   17.51 % 
Thursday                 604 commits         ████░░░░░░░░░░░░░░░░░░░░░   15.42 % 
Friday                   472 commits         ███░░░░░░░░░░░░░░░░░░░░░░   12.05 % 
Saturday                 186 commits         █░░░░░░░░░░░░░░░░░░░░░░░░   04.75 % 
Sunday                   592 commits         ████░░░░░░░░░░░░░░░░░░░░░   15.11 % 

📊 This Week I Spent My Time On

🕑︎ Time Zone: America/Sao_Paulo

💬 Programming Languages: 
Java                     11 hrs 15 mins      ██████████████░░░░░░░░░░░   56.38 % 
Other                    4 hrs 10 mins       █████░░░░░░░░░░░░░░░░░░░░   20.89 % 
Bash                     2 hrs 6 mins        ███░░░░░░░░░░░░░░░░░░░░░░   10.55 % 
HTTP Request             40 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   03.38 % 
SQL                      31 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   02.67 % 

🔥 Editors: 
IntelliJ IDEA            12 hrs 9 mins       ███████████████░░░░░░░░░░   60.94 % 
Obsidian                 3 hrs 55 mins       █████░░░░░░░░░░░░░░░░░░░░   19.70 % 
Vim                      2 hrs 14 mins       ███░░░░░░░░░░░░░░░░░░░░░░   11.23 % 
Postman                  40 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   03.38 % 
VS Code                  34 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   02.90 % 

🐱‍💻 Projects: 
spring-boot-profissional 16 hrs 38 mins      █████████████████████░░░░   83.37 % 
Unknown Project          2 hrs 42 mins       ███░░░░░░░░░░░░░░░░░░░░░░   13.56 % 
ObsidianVault            32 mins             █░░░░░░░░░░░░░░░░░░░░░░░░   02.75 % 
kitty                    3 mins              ░░░░░░░░░░░░░░░░░░░░░░░░░   00.32 % 

💻 Operating System: 
Mac                      15 hrs 37 mins      ████████████████████░░░░░   78.31 % 
Linux                    4 hrs 19 mins       █████░░░░░░░░░░░░░░░░░░░░   21.69 % 

I Mostly Code in Java

Java                     12 repos            ██████░░░░░░░░░░░░░░░░░░░   25.00 % 
TypeScript               11 repos            ██████░░░░░░░░░░░░░░░░░░░   22.92 % 
JavaScript               6 repos             ███░░░░░░░░░░░░░░░░░░░░░░   12.50 % 
Python                   4 repos             ██░░░░░░░░░░░░░░░░░░░░░░░   08.33 % 
Astro                    1 repo              █░░░░░░░░░░░░░░░░░░░░░░░░   02.08 % 

Last Updated on 01/11/2025 01:40:59 UTC