My store is already running on Prestashop 8.3.1 and I need an expert who can architect, code, and maintain bespoke modules from the ground up. The work is long-term and hands-on: every feature must respect Prestashop coding standards, make full use of hooks, stay override-free, and remain compatible with future 8.x updates. Typical modules you will be tackling range from new payment flows to smart product filtering and tailor-made shipping rules, so your grasp of the entire Prestashop ecosystem—including its ObjectModel, Symfony layer, and modern front-office stack—is essential. Weekend availability is non-negotiable; bug fixes, refactors, and release packaging often fall on Saturday or Sunday, and I need rapid feedback loops during those periods. We will version everything in Git, review through pull requests, and document each release in a changelog. Deliverables for each module • Complete, installable .zip following Prestashop conventions • Clear configuration screens in BO and translated strings ready for i18n • Inline code comments plus a README covering setup, hooks used, and overrides avoided • Unit or functional tests that prove the critical paths work on 8.3.1 Acceptance criteria 1. The module installs and uninstalls without errors or warnings. 2. No core files are modified; all logic is hook-based or service-injected. 3. Performance overhead stays within Prestashop best-practice thresholds (<100 ms added page load). 4. The codebase passes PHP-Stan level 5 and PSR-12 formatting checks. If you have a track record of shipping production-ready Prestashop modules and are comfortable being on call over the weekend, let’s talk; I’m ready to start as soon as you are.