Harald De Leon
Manager Backend Development at Robinson Club GmbH
North Rhine-Westphalia, Germany
Summary
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SeniorHarald De Leon is a seasoned backend engineering leader with 21 years of experience, currently managing Backend Development at Robinson Club in North Rhine-Westphalia. He built and led the osCommerce community for two decades, modernizing legacy PHP e-commerce codebases and driving payment integrations like Stripe to improve merchant experience and developer adoption. Harald combines hands-on modernization skills—updating deprecated PHP functions, migrating to MySQLi, and implementing card management features—with people leadership and community building. His work blends pragmatic maintenance of long-lived systems with adding modern payment flows, making him adept at stabilizing and evolving mission-critical e-commerce platforms. Outside work he’s a proud father of two, reflecting an ability to balance long-term stewardship with day-to-day delivery.
21 years of coding experience
25 years of employment as a software developer
English, German
Github Skills (11)
apim10
oscommerce10
php10
maintenance10
payment-processing10
api10
mysql10
ecommerce10
database-design9
web-development9
apidoc6
Programming languages (2)
Github contributions (5)
osCommerce/oscommerce2
Mar 2006 - Nov 2017
osCommerce Online Merchant v2.x
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 2779 commits, 235 PRs in 11 years 10 months
Contributions summary:Harald's contributions primarily focused on enhancing the Stripe payment module within the osCommerce e-commerce platform. The commits involved updating the API version, adding features such as automatically setting Stripe as the default payment method based on token availability, and implementing a card management page as an account content module. The code changes involved modifying PHP files within the catalog directory, indicating work related to the backend functionality and payment processing logic of the e-commerce platform.
merchantecommerceoscommerce
gburton/CE-Phoenix
Jul 2019 - Jul 2019
CE Phoenix is the ONLY Community Edition osCommerce. This Repo is now defunct, please see the new Repo URL listed below.
Role in this project:Back-end Developer
Back-end DeveloperContributions:11 commits, 2 PRs, 1 comment in 12 days
Contributions summary:Harald primarily contributed to the modernization and maintenance of the legacy osCommerce codebase. They focused on updating deprecated PHP functions and directives to ensure compatibility with newer PHP versions, specifically addressing issues related to sessions, database interactions (MySQLi replacement), and general function deprecations. Their work also involved code cleanup, removing outdated checks, and ensuring the application's stability.
phoenixecommerceoscommercecommunity-edition
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