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- Developed backend and frontend features for Klipso's proprietary CMS platform, used to create and manage events, including ERP, mailing, PDF generation, CSV import/export, and e-commerce modules. - Migrated and redesigned the backend architecture from CakePHP 1.4 to CakePHP 4.2. - Refactored legacy PHP applications to Symfony 5.4, improving maintainability and code structure. - Built a Django-based automation platform using cron jobs to detect iOS, Android, and browser releases and automatically generate Jira Epics and Xray test workflows. - Developed Node.js backend services for real-time social media data integration for mobile applications. - Developed new features and customized web, iOS, and Android applications using React.js. - Contributed to CI/CD automation for mobile applications using Bitrise. - Managed backend environments with Apache, Docker, and Certbot and resolved critical production issues.

- Integrated international Payment Service Providers including Lyra, Worldpay, PayPal, dLocal, Crédit Agricole, Linxo, and Sogenactif through secure REST APIs. - Designed and maintained payment workflows covering authorization, capture, refunds, declined transactions, error handling, and asynchronous notifications. - Developed ERP, CRM, e-commerce, and reservation features for a large-scale cruise booking platform. - Developed a Symfony 6 cartographic web service for ship deck visualization and cruise booking management. - Implemented logging, monitoring, and exception handling and resolved complex production incidents affecting payment processing. - Defined WBS, coordinated technical tasks with internal teams and external providers, and contributed to code reviews in an Agile/Scrum environment.