About
I am a full-stack web developer with a Computer Engineering degree, specializing in building modern websites and web applications. I offer affordable, professional solutions ranging from basic web applications to comprehensive systems that support businesses across different sectors.
UI/UX Designer & Web Developer
I work with both frontend and backend technologies, delivering scalable applications with a focus on performance and security. My expertise covers the entire development lifecycle — from server setup and configuration, through backend and frontend development, to fully secured websites.
Skills & Technologies
Comprehensive expertise across the full web development stack.
Frontend Development
Tworzenie responsywnych i interaktywnych interfejsów przy użyciu Next.js i React.js. Praca z frameworkami CSS oraz bibliotekami komponentów, takimi jak Mantine UI i Material UI.
Backend Development
Budowa zapleczy Node.js + Express.js oraz interfejsów REST API z bezpiecznym uwierzytelnianiem za pomocą JWT i OAuth2. Wykorzystanie nowoczesnych baz danych NoSQL, takich jak MongoDB.
Security & Payment
Wdrażanie systemów bezpieczeństwa i uwierzytelniania zgodnie ze standardami JWT i OAuth. Zarządzanie rolami i uprawnieniami w panelach administracyjnych i klienckich. Integracja aplikacji z systemami płatności, takimi jak Stripe i Przelewy24, w tym bezpieczne potwierdzenia płatności za pomocą webhooków.
Infrastructure & Deployment
Wdrażanie aplikacji full-stack na serwerach VPS z konfiguracją NGINX, konfiguracją domen i instalacją certyfikatów SSL. Stosowanie CI/CD z GitHub dla automatycznych wdrożeń.
UI/UX, Performance & SEO
Projektowanie responsywnych i dostępnych interfejsów z dbałością o doświadczenie użytkownika. Optymalizacja wydajności za pomocą lazy loading, cachowania i optymalizacji obrazów. Wdrażanie strategii SEO i integracja analityki dla lepszej widoczności i zaangażowania.
CMS & WordPress
Integracja platform CMS, w tym WordPress. Dostosowywanie motywów i wtyczek, optymalizacja SEO, poprawa wydajności oraz konfiguracja SSL dla bezpiecznego dostępu.
Portfolio
Recent projects showcasing my expertise in web development.
Responsive Restaurant Website
Modern, fully responsive website for a restaurant featuring online ordering, menu, gallery, table reservation system, and contact form.
See more...
Restaurant POS Management System
Advanced web application for managing a restaurant: admin panel, customer accounts, orders, menu items, categories, and staff workflows.
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Holiday Resort Booking Website
Custom WordPress site for a holiday resort with online booking, gallery, and easy content management for quick updates.
See more...Services
Comprehensive web development solutions from concept to deployment.
Websites & Applications
High-quality, fully customized websites and web applications.
- ✓Fully personalized visual design
- ✓Full responsive web design
- ✓Single Page Applications (SPA)
- ✓Multilingual websites
- ✓GA, GTM, Pixel analytics
- ✓GDPR / Consent Mode
Custom Web Applications
Tailored web applications and backend solutions.
- ✓Microservices
- ✓Online payments integration (Stripe, Przelewy24)
- ✓Booking & payment systems
- ✓Dedicated CMS (Content Management System)
- ✓Client & Admin panels with user management
- ✓Custom authentication systems
- ✓Integration with other systems
- ✓API integrations
Servers & Hosting
Support in server setup and hosting for optimal performance and reliability.
- ✓Domain & hosting setup
- ✓Troubleshooting and problem-solving
- ✓VPS server configuration (Ubuntu, NGINX)
- ✓Security hardening (Firewall, Fail2ban)
- ✓Database management
SEO & Analytics
Improve website visibility, performance, and real-time monitoring.
- ✓Google Analytics (GA)
- ✓Speed optimization
- ✓Google Search optimization
- ✓Real-Time Traffic Monitoring
WordPress & CMS
Professional WordPress websites with modern design and custom functionality.
- ✓Installation and configuration
- ✓Build from scratch
- ✓Plugin customization
- ✓Performance optimization
- ✓Security enhancements
- ✓SSL certificates installation
Payments
Integration with popular payment methods and systems.
- ✓Apple & Google Pay, Visa, Mastercard, BLIK, etc.
- ✓Payment carts
- ✓Payment confirmations
Contact
Let's build something great together! Whether you need a custom web application, a modern business website, or help with server setup and security – feel free to reach out. I'll be happy to discuss your project and find the best solution for your needs.
Call Me
+44 7518 577503
Email Me
sprengel.rafal@gmail.com
Address
Hull, United Kingdom