● Manage over 40 Shopify stores by creating new features, optimising views, setting up Google Analytics events and developing custom applications deployed on Google Cloud. Integrate different websites using tools such as the Shopify CLI, React, TypeScript, Liquid and GraphQL. ● Lead a project for a custom Point of Sale (POS) application for over 300 stores across six countries in Central America. Integrate it with Shopify and SAP, using tools such as React, TypeScript, JavaScript, ShadCDN, TailwindCSS, Jest and .NET Core with C#. Use CLAUDE to accelerate and enhance the project. ● Manage different applications on Google Cloud services and Firebase. ● Collaborate with HotWax Commerce (India) through Jira to manage tasks, define functional requirements and perform functional testing and QA validation on delivered features, ensuring systems meet business expectations before release. ● Lead a project to save student credentials and link them to a loyalty programme using tools such as React, TypeScript and Python to automate the process of approving and recollecting data from student credential images

● Designed and executed functional, regression and smoke test cases for critical healthcare systems used across 700+ health units, ensuring stability and reliability of core platform features before each release. ● Performed end-to-end testing using Playwright and manual testing strategies to validate workflows across multiple modules of the public health network system. ● Identified, documented and tracked defects through their full lifecycle, coordinating with development teams to ensure timely resolution and proper regression coverage. ● Collaborated in the definition of acceptance criteria and participated in sprint reviews to validate that delivered features met functional and business requirements. ● Contributed to improving QA processes by establishing testing guidelines and promoting a quality-first culture within the development team.

● Develop, improve, optimize and run end-to-end testing to the main system used by more than 700 health units and hospitals within El Salvador's public health network, using tools such as PHP, Symfony, JavaScript, jQuery, CSS, Bootstrap, HTML, Twig, SQL, PostgreSQL, Git, GitLab. ● Lead a project for accident and occupational health management within the Ministry of Health, developed with JavaScript, NodeJS, ExpressJS, VueJS, Vuetify, SQL, PostgreSQL, Git, GitLab. ● Optimize an ambulance control and monitoring system using tools such as PHP, Laravel, NextJS, React, SQL, PostgreSQL, Git, GitLab. ● Design and develop a medical indicators system related to patient information, created with PHP, Laravel, HTML, Bootstrap, Blade, JavaScript, SQL, PostgreSQL, Git, GitLab. Node.js · Express.js · Next.js · Vue.js / Vuetify · React · PHP / Laravel / Symfony · PostgreSQL · JavaScript · jQuery · Git / GitLab

● Developed a project and team monitoring and management system, also generating indicators for various projects; developed with PHP, Laravel, Livewire, Blade, Bootstrap, HTML, CSS, JavaScript, jQuery, SQL, MySQL, Git, GitHub.