Hello, I'm

Sebastian Orjuela

Backend Developer

Backend Developer specialized in robust APIs with Java and Spring Boot. Experience in concurrency, automation, and clean architecture.

About Me

Developer.java
// Java — primary stack
public class BackendDeveloper {

  private final String name    = "Sebas Orjuela";
  private final String role    = "Backend Developer";
  private final String[] stack = {
    "Java", "Spring Boot",
    "Python", "FastAPI"
  };

  public String passion() {
    return "Clean APIs & Microservices";
  }
}

# Python — complementary stack
class SameDevPythonSide:
    stack    = ["FastAPI", "Quart"]
    devops   = ["GitHub Actions", "Docker"]
    approach = "Test-driven & CI/CD first"

I am a backend developer focused on Java and Spring Boot, specialized in designing and building robust, scalable, and maintainable APIs.

I have complementary experience in Python with FastAPI and Quart, which lets me adapt to different environments. I also work with GitHub Actions for CI/CD automation and apply testing practices to ensure application quality.

I focus on clean code, best practices, and building solutions that efficiently solve real problems.

Java & Python Spring Boot · FastAPI · Quart
DevOps & CI/CD GitHub Actions · Docker · Podman
Colombia Available for remote work

Skills & Technologies

Languages

  • Java
  • Python

Frameworks

  • Spring Boot
  • Quart
  • FastAPI

Databases

  • PostgreSQL
  • MySQL
  • MongoDB

Tools

  • Git
  • GitHub
  • Docker
  • Podman
  • Maven

Testing

  • JUnit
  • Mockito
  • Pytest
  • Postman

Concepts

  • REST APIs
  • Microservices
  • CI/CD
  • Asynchronism

Experience

2024 - 2025 | 6 months

Software Developer Intern

Lumu Technologies

I contributed to the development of technological solutions by building APIs, backend functionalities, and frontend components for internal applications...

Education

Academic Degrees

2023 – 2025

Technologist in Software Analysis and Development

SENA
2021 – 2022

System Technician

SENA

Certifications & Courses

Google Cybersecurity

Coursera June 2025

Introduction to JavaScript Programming

Universidad Distrital FJC – Generación TIC March 2022

Digital Creative Industries

UTP – Misión TIC 2022 December 2022

Projects

Complete

Bankcore System Api

Banking system composed of two microservices...

  • Java
  • Spring Boot
  • PostgreSQL
  • Docker
  • CI/CD
  • JUnit
  • Mockito
In Progress

Sports Pulse API

Real-time football analytics platform...

  • Java
  • Spring Boot
  • PostgreSQL
  • Docker
  • CI/CD
  • JUnit
  • Mockito
In Progress

SwissRoute API

Public transport trip planning REST API built with Spring Boot and PostgreSQL. Integrates external transport APIs to manage stations, connections, favorite routes, and travel history

  • Java
  • Spring Boot
  • PostgreSQL
  • Docker
  • CI/CD
  • JUnit
  • Mockito

Get in Touch

Have a project in mind or just want to say hello? I'd love to hear from you.