Hi, my name is

Duvan Villadiego.

Backend Developer | Java & .NET

I build scalable, secure, and reliable enterprise-grade applications. Specializing in Microservices, RESTful APIs, and Database Optimization.

Check out my workContact me
  • Download CV
    • Duvan Villadiego

    About Me

    I am a Backend Developer with over 4 years of experience building and integrating enterprise-grade applications. My expertise lies in Java (Spring Boot) and C# (.NET), focusing on RESTful API design, microservices, and database optimization.

    I have a strong background in Agile/Scrum environments, CI/CD pipelines, and clean code practices. I am passionate about improving system performance and delivering secure, scalable solutions. My goal is to create simple, reliable solutions for complex problems.

    4+

    Years of Experience

    10+

    Projects Delivered

    Experience

    Software Development Analyst@ Soluciones Fourgen
    Jul 2024 – Present

    Led performance optimization of the Integral System ICG plugin, reducing resource usage from 38% to just 3%. Enhanced SQL stored procedures (25% faster) and implemented Strategy/Builder patterns.

    Java Developer@ Nexos Software SAS
    Sep 2023 – Mar 2024

    Built and deployed microservices under Hexagonal Architecture with Spring Boot. Improved message reliability in ActiveMQ queues (99.8% success rate) and streamlined Angular integration.

    Full-Stack Developer@ PuntoRed
    Jun 2022 – Jul 2023

    Refactored Java 1.8 libraries to Java 11 (30% performance boost). Expanded secure financial integrations using AES-256 encryption. Systematized reconciliation processes, reducing manual workload by 40%.

    Application Developer Associate@ Accenture Colombia
    May 2021 – Jun 2022

    Integrated COBOL services with modern Java-based systems. Created automated tests with JUnit and Mockito, raising test coverage to 95%.

    Featured Projects

    Loading projects from GitHub...

    Technical Skills