Work Experience
SimPay.pl
may 2024 - current
- 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.
JunakPodkarpacie.pl
- 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.
MielecNieruchomosci.pl
- 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.
SpaceIs.pl
dec 2020 - jul 2024
- 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.