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JQ

Software Developer at Veneplast, Cartagena, Colombia

Javier Quintana

FullStack Developer · Quality Engineer

I build full-stack software, from responsive websites and web applications to reliable back-end services, using technologies like C#, .NET, React, Angular, Astro and SQL.

About

Systems engineer and software developer with a strong focus on C# and .NET, experienced in developing, maintaining, and improving back-end applications and services. Actively involved in technical solution design, applying architectural best practices, SOLID principles, and quality standards to build scalable, maintainable, and secure systems.

Name
Javier Quintana
Date of birth
August 15, 2004
Address
Cartagena - Bolivar

Experience

  1. July 2024 - Present

    Software Developer

    Veneplast

    Develop an electronic POS invoicing system using C# and .NET, implementing Entity Framework for efficient data management and SQL Server as the database. The focus is on building robust, scalable solutions that optimize invoicing processes and ensure regulatory compliance.

  2. December 2023 - June 2024

    QA Automation

    Facture BY Estela

    SQL · C# · .NET · Azure · Data Studio · Databases · Manual testing · Test cases · Selenium · Automated testing

  3. August 2023 - December 2023

    Software Quality Trainee

    Facture BY Estela

    Internship as a Software Quality Engineer in a company that deals with electronic invoicing.

Education

  1. 2023 - Present

    Systems Engineering

    Universidad del Sinú

    University where I study systems engineering, focused on software development.

  2. 2021 - 2023

    Systems Technology

    Universidad del Sinú

    University where I studied systems technology, focused on software development.

  3. 2009 - 2020

    Elementary - High School

    Institución Educativa José Manuel Rodríguez Torices INEM

    Educational institution where I completed my elementary and high school studies.

Skills

  • .NET80%
  • SQL75%
  • Angular60%
  • React60%
  • Docker50%
  • Azure Devops80%
  • Azure Portal60%
  • Git75%

Projects

  • A static beauty catalog built with Next.js, TypeScript, and Tailwind CSS, where customers can browse products and place orders through WhatsApp. It also includes a mobile-friendly admin panel for managing products, variants, categories, and publishing catalog updates without a database.

    Visit catalog (opens in a new tab)

  • A multi-tenant point-of-sale system for small restaurants, covering dine-in, pickup, and delivery orders, kitchen tickets, payments, inventory, and shift reconciliation. Built with ASP.NET Core, React, and PostgreSQL, with tenant isolation enforced at both the application and database levels.

    Visit application (opens in a new tab)

  • Contributed code and structural improvements to the official website for La Velada del Año V, a live boxing and entertainment event.

    Visit website (opens in a new tab)