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WillKas/README.md

👋 Hi, I'm Willian Betim

💻 Backend Engineer | Systems Architecture | Integrations & Distributed Systems

I’m a software developer focused on building robust, scalable, and integration-driven systems. My work revolves around backend architecture, microservices, data processing, and cloud-native solutions.

🚀 About Me

  • 🔧 Strong focus on backend development and system architecture
  • ☁️ Experience with cloud environments (AWS & OCI)
  • 🔄 Heavy use of integrations and messaging systems
  • 🐧 Linux-first mindset with automation and scripting
  • 📊 Working with data processing, ETL, and performance optimization
  • 📚 Constantly learning (Golang, Rust, and advanced architectures)

🧠 Tech Stack

💻 Backend

  • Java (Spring Boot, Spring Security, JPA, Spring Data)
  • C#
  • Python (data processing, automation)
  • Ruby (report generation)
  • Golang (learning & experimentation)
  • Rust (learning & experimentation)

🌐 Frontend

  • Angular
  • React
  • Vue.js
  • JSP / JSF (Primefaces)
  • Thymeleaf

🗄️ Databases

  • PostgreSQL
  • MySQL
  • SQLite
  • H2

📡 Messaging & Integration

  • Apache Kafka
  • RabbitMQ
  • AWS SQS
  • OCI Queue
  • REST / SOAP / FTP

☁️ Cloud & DevOps

  • AWS (EC2, S3, SQS, ECR, ECS, Athena)
  • Oracle Cloud Infrastructure (OCI)
  • Docker
  • Kubernetes
  • GitLab CI/CD
  • Maven

🛠️ Tools

  • Jasper Reports
  • JUnit
  • Git (GitLab, Azure DevOps)
  • Shell Script

🖥️ Environments

  • Linux (Ubuntu, Debian)
  • Windows

⚡ Mindset

"Good code solves problems. Great code solves problems and scales without pain."

⭐ Always improving, always building, always optimizing.

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