Juan Espina
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I'm Juan Espina

I'm a Computer Engineer based in Maracaibo. Since 2020, I've worked in software development with corporate teams, agencies, and clients in Latin America and the United States.

I like understanding the whole problem: who will use the system, how the data needs to flow, and what it takes to turn the idea into a useful application.

My personal projects give me room to experiment and learn.

My journey

  1. Grupo RG

    Junior Developer · July 2020 – March 2021

    I contributed to an internal management system built with C#/.NET, Angular, and SQL Server. I worked on features and backend improvements that supported the business's operations.

    C#/.NET · Angular · SQL Server

  2. Bits Kingdom

    Full Stack Developer · March 2021 – March 2023

    I worked on quite different projects: e-commerce sites, social networks, and contract generators built on legacy systems. I also worked on payment integrations with Stripe and WooCommerce and migrated JavaScript modules to React.

    JavaScript · React · PHP · WordPress · Laravel · Stripe

  3. Nuvol Solutions

    Development Consultant and Full Stack Developer · part-time · January 2023 – January 2024

    I contributed to a healthcare application using Angular, Nx, and AWS serverless services, with integrations to medical practice management platforms. As a consultant, I ported a native Android Java app to a Cordova plugin for hybrid telecom apps in South America and fixed bugs on WordPress sites.

    Angular · Nx · AWS · Java · Cordova · WordPress

  4. Factor Consulting / Nextfaze AI

    Full Stack Software Engineer · since May 2023, part-time at first

    I've worked on AI document-processing applications and features built with Next.js, NestJS, and Python/Django. My work also includes comparing models, evaluating results with Langfuse, and automating prompt review and improvement loops.

    Next.js · NestJS · Python/Django · Langfuse

  5. TEAM International

    QA Automation Engineer · full-time · November 2023 – May 2024

    I automated test plans with Cypress for an IoT application used in hospitals.

    Cypress

Beyond the code

The bridge and lake on this page are Maracaibo's, where I live. The cats hiding around the site are mine: Tico, Lio, Kitty, Tino, Mely, Hoshi, Hikaru, and Yellow. I like learning out of curiosity and keeping side projects going; I'm also interested in crypto and have done some early exploration of Web3 development.

I'm a football fan and a gamer, especially of the Metal Gear Solid series. I love cats, and animal welfare causes matter to me.

Get in touch