Patryk Vizauer

Led the implementation of BLIK refund functionality, as well as BLIK Level 0 and BLIK "Pay Later" payment methods, ensuring smooth integration with external payment APIs.
Conducted a comprehensive refactor of the existing systems — improving performance, readability, and maintainability across the entire codebase.
Identified and eliminated technical debt, redesigned legacy components, and introduced coding standards to enhance long-term project scalability.
Tasked with integrating additional payment solutions including Paysafecard, Skrill, and PagSeguro, adapting to each provider's specific API requirements and security protocols.
Built reusable backend components and services to support faster development of new features and reduce code duplication.
Optimized backend performance by reducing redundant logic, introducing caching strategies (e.g. Laravel cache, Redis), and improving data flow between services.
Refactored complex SQL queries, optimized Eloquent relationships, introduced eager loading, and added indexing to improve database query performance.
Applied Laravel best practices such as Service pattern, custom request validation, and clean controller logic separation.
Implemented a multi-currency support system, enabling dynamic currency conversion and accurate transaction handling across different regions.
Designed and developed all new features following SOLID principles to ensure clean, modular, and maintainable code architecture.

Developed a complete listing platform for motorcycles, quads, scooters, and mopeds using Laravel, including a custom-built backend system for managing offers, users, and content.
Designed and implemented an advanced admin panel with features such as filtering, status management, image galleries, and role-based access control.
Ensured scalability and maintainability by applying Laravel best practices, modular architecture, and clean code principles throughout the system.
Integrated SEO-friendly URLs, dynamic category structures, and custom validation rules to enhance both user experience and platform performance.

Built a real estate listing and management platform using Laravel, supporting the creation and display of property offers such as apartments, houses, and commercial spaces.
Developed a feature-rich admin panel allowing agents and admins to manage listings, upload property galleries, set pricing, and define location details via an intuitive interface.
Implemented advanced filtering and search functionality, including parameters like location, price range, property type, and availability.
Ensured data consistency and clean architecture by following Laravel conventions, applying SOLID principles, and separating business logic into dedicated service layers.

Designed and developed spaceis.pl, a complete Laravel-based ItemShop platform for Minecraft servers, enabling server owners to sell virtual items, ranks, and services to players.
Built a dynamic and modular admin panel for managing servers, offers, payments, discount codes, users, and purchase history.
Integrated multiple payment operators including SimPay and CashBill, supporting SMS payments, bank transfers, and online gateways via robust API integrations.
Developed a secure, documented REST API for seamless integration between the platform and Minecraft servers, enabling real-time delivery of purchased items.
Implemented features such as webhook handling, purchase verification, order queuing, and retry mechanisms to ensure reliable transaction processing.

Work Experience