Hi, I’m Otavio, a Brazilian developer 🇧🇷 passionate about building robust and scalable backend systems.
- 🚀 Specialist in Java + Spring Boot for enterprise-grade RESTful APIs
- 🤝 Official Core Contributor at QuoteVote (Open Source)
- 🔒 Skilled in OAuth2, Spring Security & Session Management
- 🐧 Linux Enthusiast focused on DevOps and Environment Setup
- 🎯 Goal: Become a Backend Specialist while mastering Distributed Systems
- 📚 Studying Computer Engineering at UNIVESP
Java · Spring Boot · Spring Security · Spring Data JPA · TypeScript · Node.js (Express 5)
PostgreSQL · MongoDB · MySQL · Redis · Flyway
Docker · Docker Compose · AWS (EC2) · Nginx · CI/CD pipelines · Linux
Android · Kotlin · Firebase
I'm proud to be a Contributor for Quote.Vote, helping build the next generation of thoughtful social platforms.
An open-source, text-only social platform fostering deliberative dialogue through real-time chatrooms.
My Role: Core Contributor (Backend & DevOps)
- Modern Stack: Working with Node.js 20+, Express 5, TypeScript (Strict), and GraphQL (Apollo Server).
- Infrastructure: Responsible for optimizing the Docker environment and containerization strategies for the monorepo structure.
- Collaboration: migrating legacy logic to a robust, type-safe architecture using Next.js 16 standards and MongoDB.
GraphQL · Kubernetes · System Architecture · French (Français) 🇫🇷
🌹 Rosário Vivo (Latest)
Rosário Vivo → A Catholic spiritual platform to track daily Rosary practice, learn the Mysteries, and grow in prayer.
🔑 Key Features:
- Daily check-in — log prayers with Mystery selection, intentions & reflection
- Streak tracking — monitor prayer consistency over time
- Content library — teachings, traditional prayers, learning paths & resources
- Installable PWA with dark/light theme (Cathedral Night & Sacred Cream)
- Full-stack monorepo: Next.js 16 (App Router) + NestJS 10 + MongoDB 7
- Docker Compose + Coolify deployment
📊 LogHub
LogHub → A SaaS Log Aggregator built with the latest Spring Boot 4 & Java 25.
🔑 Key Features:
- Log ingestion & aggregation via RabbitMQ (AMQP)
- MongoDB for flexible log storage
- Spring Boot Actuator for health monitoring
- Docker Compose for containerized deployment
🍽️ AiFoodApp
AiFoodApp → A complete food management & AI recipe system built with Spring Boot.
🔑 Key Features:
- Google OAuth2 authentication with Spring Security
- Persistent sessions with Spring Session JDBC
- Food CRUD with nutritional data
- AI-powered recipe generation (Spring AI + Maritaca API)
- PostgreSQL + Flyway for database migrations
- Docker Compose + Nginx + AWS EC2 deployment
🌍 Live Demo: aifoodapp.site (Temporarily under maintenance)
