David Carreño
Freelance Software Developer
Cobeña, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolDavid Carreño is a seasoned freelance software developer based in Madrid with 16 years of experience building and modernizing web and embedded systems across Linux, Windows and LAMP environments. He specializes in PHP full-stack development (Symfony, WordPress), C/C++ for Linux, and automation using shell scripting, bringing both deep systems-level knowledge and practical web engineering. As a former lead backend developer at The Healthy Mummy, he modernized legacy code, introduced automated PHPUnit/Selenium test suites with Docker in CI, and managed a remote team—demonstrating strengths in scalability and developer workflows. His open-source contributions include backend fixes and memory optimizations to the high-profile WooCommerce project, showing attention to performance and API correctness. Comfortable toggling between low-level device software and high-level web platforms, he combines hands-on coding with system administration and project leadership for SMEs and online businesses.
15 years of coding experience
23 years of employment as a software developer
High School Diploma E.G.B B.U.P. y C.O.U., High School Diploma E.G.B B.U.P. y C.O.U. at Colegio Nuestra Señora de los ÁngelesMaster's degree Computer Science Engineering, Master's degree Computer Science Engineering at Universidad Politécnica de Madrid
Spanish, English
Stackoverflow
435reputation
97kreached
10answers
8questions
Github Skills (16)
woocommerce10
wordpress10
php10
back-end-development10
ecommerce10
data-serialization8
serialization8
sql7
apidoc7
api7
linux6
bash6
javascript6
undefined6
wget6
Programming languages (11)
Github contributions (5)
woocommerce/woocommerce
Sep 2016 - Jan 2023
A customizable, open-source ecommerce platform built on WordPress. Build any commerce solution you can imagine.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 31 commits, 22 PRs in 6 years 5 months
Contributions summary:David's commits primarily focused on modifying back-end code related to the WooCommerce platform. Their contributions involved fixing bugs, optimizing memory usage within the AJAX functionality, and adding filters to customize functionality. These changes included addressing issues with data serialization, correcting incorrect value castings, and adding features to customize variations count. The user demonstrated an understanding of the WooCommerce codebase and its API.
ecommercecommercewordpressautomatticphp
davefx/WordPress
Nov 2017 - Jan 2025
Contributions:8 pushes, 3 branches in 7 years 3 months
branchessubversionwordpresssvnsubmit
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