Kuba
Gryglak
Full-stack engineer focused on designing and building scalable backend systems, real-time platforms and production-ready architectures.
I work at the intersection of performance, reliability and clean system design - turning complex product ideas into efficient, maintainable solutions.
Exploring AI-assisted development tools (Codex and similar) to accelerate implementation and streamline development workflows.
Academic Background
M.Sc. in Internet Engineering
Wrocław University of Science and Technology
Focus: distributed systems, web architecture
Experience
Fullstack Developer
Independent / Contract Work
Designed and delivered full-stack applications end-to-end, covering system architecture, backend services and user interfaces. Focused on building scalable platforms with real-time capabilities and complex business logic, including ordering systems, marketplaces and content-driven applications.
Ordering Platform for Restaurants
Developed a full-stack ordering system enabling businesses to create menus and accept real-time orders via QR codes, including payment integration and live order tracking.
Challenge
The platform required a seamless ordering experience across multiple venues, allowing users to quickly access menus via QR codes, place orders and receive real-time updates. Key challenges included handling concurrent orders, managing dynamic menus and integrating reliable payment systems while maintaining responsive performance.
Solution
Designed and implemented a full-stack system supporting restaurant onboarding, menu management and QR-based ordering flows. Led development as the main engineer, coordinating a team of 4 developers and defining system architecture and implementation approach.
Results
Delivered a scalable ordering platform enabling contactless ordering and real-time order tracking, improving operational efficiency for restaurants and reducing wait times for customers.
P2P Cryptocurrency Trading Platform
Developed a peer-to-peer trading system with offer matching and real-time chat, enabling users to find and negotiate the best available crypto exchange deals.
Challenge
The platform required efficient matching of buy/sell offers based on user-defined parameters (currency, amount), along with a reliable communication channel between traders. Key challenges included handling dynamic offer selection and ensuring smooth real-time interaction between users.
Solution
Designed and implemented a full-stack application enabling users to browse and match with optimal trading offers. Built backend logic for filtering and selecting best-fit offers based on input criteria. Developed a real-time chat system using Node.js and WebSockets (Socket.IO) to support direct communication between traders. Integrated the system with a PHP/MariaDB backend for data persistence and transaction flow management.
Results
Delivered a functional peer-to-peer trading platform with real-time interaction capabilities, enabling users to efficiently connect and negotiate trades in a dynamic marketplace environment.
Architectural Projects Management & Sales Platform
Developed a content-driven platform for managing and presenting architectural projects, enabling structured catalog browsing and streamlined client interaction.
Challenge
The platform needed to handle a large number of architectural projects with detailed specifications, while maintaining a clear and user-friendly browsing experience. It also required a structure that supports both content presentation and conversion (inquiries/purchases).
Solution
Designed and implemented the platform from scratch using PHP, MariaDB and JavaScript. Built a structured system for managing project data, including categories, detailed specifications and media content. Focused on creating a clean UI for navigating complex project information and ensuring efficient data handling on the backend.
Results
Delivered a scalable and maintainable system for presenting and managing architectural projects, improving content organization and enabling users to easily explore and compare available designs.
Frontend / Django Developer
Internet Center Polska Sp. z o.o.
Developed web applications using PHP and Django, focusing on building scalable systems and improving usability in data-intensive, form-driven platforms. Worked on backend integration and frontend architecture to simplify complex user interactions.
Professional Networking & Experience Platform
Built a form-heavy frontend for a platform connecting professionals based on skills and project experience, focusing on usability and clarity in complex user flows.
Challenge
The platform required users to input detailed professional data through complex interfaces. The challenge was designing a frontend that remained intuitive despite high input complexity.
Solution
Designed and implemented a structured frontend using Django integration. Focused on usability through clear form segmentation, logical grouping and progressive disclosure.
Results
Improved overall usability and reduced friction in multi-step form interactions, enabling users to efficiently manage detailed professional profiles.
Frontend / Drupal Developer
Artefakt Sp. z o.o. sp. k.
Implemented frontend solutions and CMS-based platforms with a focus on performance, maintainability and structured content management. Built user interfaces for content-heavy systems and customized Drupal-based architectures.
Customizable Leather Goods E-commerce Platform
Configured and extended a Magento store with a dynamic product customization system allowing users to personalize leather document cases in real time.
Challenge
The client needed a seamless and intuitive customization interface that could handle complex logic for various leather types, colors and monogramming options while ensuring a real-time preview.
Solution
Developed a custom frontend using JavaScript and integrated it with a Magento backend. Implemented a logic-driven configuration engine that updated product assets dynamically based on user selection.
Results
Delivered a highly interactive and stable customization tool that increased user engagement and simplified the ordering process for personalized goods.
Multi-site Weather Content Platform
Built a scalable multi-site system on Drupal for managing weather-focused websites with customizable layouts and SEO controls.
Challenge
The requirement was to manage multiple high-traffic weather portals from a single codebase, allowing for independent layout configurations and high-performance data delivery.
Solution
Architected a Drupal multi-site installation with a shared core and theme layer. Integrated external weather APIs for real-time data ingestion and implemented an aggressive caching strategy for fast load times.
Results
Successfully launched and managed a network of weather sites with centralized administration, significantly reducing maintenance overhead and improving SEO rankings across the board.
Core Stack
BACKEND
Infrastructure & Data
FRONTEND
Let’s build scalable systems together
I help turn complex product ideas into scalable, production-ready systems. If you’re building something ambitious, let’s talk.
Prefer async? Drop a message and I’ll get back within 24h.