Feniks Currency Exchange Office

Kantor Feniks is a modern platform for presenting current exchange rates and serving local currency exchange customers. The application is built on Next.js 16 (React 19), ensuring excellent performance and SSR rendering. The design is based on Tailwind CSS 4, making the site lightweight, elegant, and fully responsive.

The most important part of the system is the dynamic exchange rate table, which automatically refreshes data and allows for quick display of the exchange rate calculator. Integration with the National Bank of Poland (NBP) API allows for real-time synchronization of three exchange rate tables (A, B, and C), while intelligent algorithms calculate the spread and suggested buy and sell values.

Owners receive an extensive administration panel where they can manage rates via drag and drop, edit data, add currencies, assign flags, and compare their own prices with those of the National Bank of Poland. The project has been carefully crafted for SEO, performance, accessibility, and security—from SSR, lazy loading, and image optimization to JWT, bcrypt, and server-side data validation. It's a complete, professional platform showcasing the capabilities of modern web technologies.

Excellent performance optimization, as evidenced by near-maximum scores in Google PageSpeed Insights. Thanks to advanced code optimization, appropriate use of SSR, multimedia compression, lazy loading, and a refined architecture, the website loads instantly on every device, ensuring the highest quality of user experience and full compliance with current Google standards.