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freyderdev/README.md

👋 Hi, I'm Freyder Otálvaro

💻 Senior Java Developer | ☁️ AWS Learner | 🌍 Remote-friendly | 🇨🇴 Colombia

🚀 About Me

I'm a backend engineer with 10+ years of experience building reliable, scalable, and clean systems using Java and Spring Boot.
I specialize in microservices, reactive programming with WebFlux, and cloud integration.

  • 🔧 Currently building event-driven systems with Kafka, Redis, and WebFlux
  • 🧠 Studying AWS Solutions Architect Certification
  • 📈 Improving my English to reach B2 fluency for global opportunities
  • ❤️ Passionate about clean code, system design, and mentoring developers

🛠️ Tech Stack

Languages & Frameworks:

  • Java with Spring Ecosystem (Spring Boot, Spring JDBC, Spring Security, WebFlux)
  • JavaScript, ReactJs

Databases & Messaging: PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ
DevOps & Cloud: Docker, Kubernetes, AWS (S3, EC2, Lambda), GitHub Actions
Testing: JUnit, Mockito, Postman,Oracle

📂 Highlight Projects

  • 🔹 spring-cloud-architecture
    Distributed microservices architecture with Spring Boot 3, Spring Cloud, Docker, and centralized security using OAuth2 and JWT. Includes service discovery, configuration management, tracing, and container orchestration..

  • 🔹 worker
    Event-driven order processing with Kafka, Redis, MongoDB, and WebFlux.

  • 🔹 spring-boot-webflux-apirest
    Reactive CRUD API with Spring Boot and MongoDB.

  • 🔹 data-structures-algorithms-java
    Classic algorithms and coding problem solutions in Java.

  • 🔹 react-invoice-manager
    Interactive billing app built with React.

📈 My GitHub Stats

📫 Let's Connect

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  1. spring-cloud-microservices-showcase spring-cloud-microservices-showcase Public

    This repository showcases a complete microservices architecture built with Spring Boot 3, Spring Cloud, and Docker, designed to demonstrate real-world backend patterns in distributed systems.

    Java

  2. spring-boot-webflux-apirest spring-boot-webflux-apirest Public

    Reactive REST API built with Spring Boot, WebFlux, and MongoDB. Includes full CRUD, photo uploads, and functional routing.

    Java 1

  3. spring-boot-webflux-client spring-boot-webflux-client Public

    Reactive WebClient application that consumes a RESTful API built with Spring Boot and WebFlux.

    Java 1

  4. chispazo chispazo Public

    1

  5. worker worker Public

    Reactive Java microservice for real-time order processing using Kafka, Redis, MongoDB, Go APIs, and Spring WebFlux with resilience and caching strategies.

    Java 1

  6. data-structures-algorithms-java data-structures-algorithms-java Public

    Coding interview problems solved in Java. Includes common data structures and algorithms with commented solutions and complexity analysis

    Java 1