About Me
I'm a full-stack developer with a degree in Computer Science Engineering, specializing in creating modern websites and web applications. I offer professional solutions at an affordable price, ranging from basic web applications to complex systems supporting businesses across various sectors.
UI/UX Designer and Web Developer
I work with both frontend and backend technologies, delivering scalable applications with an emphasis on performance and security. I handle the entire software development process, from architecture design and environment configuration, through implementing both the business logic layer and the user interface, to final security and deployment.
Skills and Technologies
Knowledge of technologies that make a website fast, reliable, secure, and attractive to the user.
Frontend Development
Creating responsive and interactive interfaces using Next.js and React.js. Working with CSS frameworks and component libraries like Mantine UI and Material UI.
Backend Development
Building Node.js + Express.js backends and REST API interfaces with secure authentication using JWT and OAuth2. Utilizing modern NoSQL databases like MongoDB.
Security and Payments
Implementing security and authentication systems according to JWT and OAuth standards. Managing roles and permissions in administrative and client panels. Integrating applications with payment systems such as Stripe and Przelewy24, including secure payment confirmations via webhooks.
Infrastructure and Deployment
Deploying full-stack applications on VPS servers with NGINX configuration, domain setup, and SSL certificate installation. Using CI/CD with GitHub for automatic deployments.
UI/UX, Performance, and SEO
Designing responsive and accessible interfaces with attention to user experience. Optimizing performance using lazy loading, caching, and image optimization. Implementing SEO strategies and integrating analytics for better visibility and engagement.
CMS and WordPress
Integrating CMS platforms, including WordPress. Customizing themes and plugins, optimizing SEO, improving performance, and configuring SSL for secure access.
Portfolio
A few of my sample projects demonstrating comprehensive business solutions using modern technologies
Responsive Restaurant Website
A modern, fully responsive website for a restaurant with online ordering, a menu, a gallery, a table reservation system, and a contact form.
See more...
Restaurant POS Management System
An advanced web application for restaurant management: admin panel, customer accounts, orders, menu items, categories, and staff workflows.
See more...
Resort Booking Website
A custom WordPress website for a resort with online booking, a gallery, and easy content management for quick updates.
See more...Services
Digital solutions that automate processes, increase business efficiency, and generate real financial benefits with minimal client effort.
Websites and Web Applications
High-quality, fully customized websites and web applications.
- ✓Fully personalized visual design
- ✓Full responsive web design
- ✓Single Page Applications (SPA)
- ✓Multilingual sites
- ✓GA, GTM, Pixel Analytics
- ✓GDPR / Consent Mode
Custom Web Applications
Customized web applications and backend solutions.
- ✓Microservices
- ✓Online payment integration (Stripe, Przelewy24)
- ✓Booking and payment systems
- ✓Dedicated CMS (Content Management System)
- ✓Customer and administrator panels with user management
- ✓Custom authentication systems
- ✓Integration with other systems
- ✓API Integrations
Servers and Hosting
Support in configuring servers and hosting for optimal performance and reliability.
- ✓Domain and hosting configuration
- ✓VPS server configuration (Ubuntu, NGINX)
- ✓Security hardening (Firewall, Fail2ban)
- ✓Database configuration and management (MongoDb)
- ✓SSL certificate installation
SEO and Analytics
Improving site visibility, performance, and real-time monitoring.
- ✓Google Analytics (GA)
- ✓Speed optimization
- ✓Optimization for Google search engine
- ✓Real-time traffic monitoring
WordPress and CMS
Professional WordPress sites with modern design and custom functionality.
- ✓Installation and configuration
- ✓Building from scratch
- ✓Plugin customization
- ✓Performance optimization
- ✓Security enhancements
- ✓SSL certificate 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 assistance with server setup and security – get in touch with me. I'd be happy to discuss your project and find the best solution for your needs.
Call me
+44 7518 577503
Send an email
sprengel.rafal@gmail.com
Address
Hull, United Kingdom