Michał Sobczak is a Certified PrestaShop Expert and Senior Backend Developer with over a decade of experience in high-performance e-commerce. Unlike traditional agencies that focus on basic setups, "Web Berserker" is dedicated to addressing intricate architectural issues, critical performance obstacles, and challenging migrations for established enterprises. Key Services: - **Advanced Migrations:** Secure upgrades from older PrestaShop versions (1.6/1.7) to 8.x, ensuring data integrity and SEO retention. - **Performance Engineering:** In-depth optimization of slow online stores (including SQL profiling and Redis/Memcached implementation) to accommodate high traffic volumes. - **Custom Development:** Creation of tailored Symfony-based modules, complex logic, and API integrations (such as ERP, PIM, and WMS) that standard plugins cannot address. - **Rescue Missions:** Stabilizing systems following unsuccessful updates or security incidents. Technical Skills: PHP 8+, Symfony, Laravel, MySQL, MariaDB, Docker, Git. Collaboration Model: B2B consultancy and staff augmentation, fully capable of remote work (based in the EU).