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.

14+ Years Experience

60+ Projects Built

Lines of Code

Currently

I'm currently rewriting the customer-facing application for a restaurant and food truck ordering platform from vanilla JavaScript to React to improve maintainability, architecture, and delivery speed. I use AI tools as practical support throughout the development process, helping accelerate delivery without compromising quality, architecture, or long-term maintainability.

Selected Projects

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

Designed the architecture and led the development of a full-stack order management platform for the food service industry, supporting restaurant tables and food trucks through QR codes, online payments, and real-time status updates. I owned the system end-to-end, including backend architecture, API design, payment integrations, and real-time communication, and later coordinated a team of four covering backend, frontend, and QA. The platform has already been validated in operation across two food service venues, including a multi-POS environment serving around 100 customers per day.

PHP

MariaDB

Redis

JavaScript

Node.js

Socket.IO

Express.js

React

Stripe API

Crypto Payments API

Real-Time P2P Crypto Trading Platform

Designed and implemented a peer-to-peer cryptocurrency trading platform focused on offer matching, transaction flows, real-time negotiation, and multi-currency settlement. I owned the system end-to-end, including backend architecture, matching logic, real-time communication, and payment/crypto integrations. The core matching, negotiation, and settlement flows were validated in production-like conditions.

PHP

MariaDB

JavaScript

Node.js

Socket.IO

Express.js

Circle API

Crypto Payments API

House Design Catalogue & Sales Platform

Designed and implemented a house design catalogue and sales platform that lets users browse, evaluate, and order architectural projects directly from the company. I built the system end-to-end, including the data model, catalog structure, advanced filtering, search logic, project presentation flows, SEO handling, and lead-generation mechanisms. The platform has been in production for over 14 years and continues to handle thousands of visits per month.

PHP

MariaDB

JavaScript

Specialist Profile & Project Matching Platform

Built the frontend layer for a professional networking platform designed to connect users with specialists based on skills, completed projects, and portfolio-style profiles. My work focused on UI implementation, complex form flows, validation logic, and the integration of JSON-based backend responses into a coherent user experience across onboarding, profile creation, search, and application flows. The platform launched into production and was used by hundreds of users, validating the frontend flows in real usage.

HTML/CSS

JavaScript

Django

Leather Document Case E-commerce Platform with Live Configurator

Customized a Magento-based e-commerce store for leather document cases, extending the platform with a JavaScript-driven product configurator and business-specific purchase logic. I implemented the core customization layer end-to-end, covering configurable product options, paid add-ons, frontend interaction logic, and the integration of those selections into the Magento shopping flow.

PHP

Magento

MySQL

JavaScript

Multi-site Weather Forecast & Content Publishing Platform

Designed and implemented a multi-site weather forecast and content publishing platform built on Drupal, serving a network of regional and domain-specific websites from a shared technical base. I owned the platform architecture end-to-end, including the multisite setup, custom modules, SEO admin tooling, theme integration, deployment, and performance optimization. The platform ran across tens of sites for several years, supported hourly forecast ingestion, and handled steady daily traffic.

PHP

MySQL

Drupal

JavaScript

About Me

For over a decade, I’ve been building software across different domains, technologies, and teams. I hold an M.Sc. in Internet Engineering from Wrocław University of Science and Technology, which gave me a strong foundation in software engineering and system design.

I focus on products that need thoughtful architecture, maintainable code, and technical decisions that continue to pay off as the system grows. Whether I’m modernizing an existing application, designing APIs, or building a product from scratch, my goal is the same: deliver reliable, scalable software without losing sight of long-term maintainability.

Outside of software, I enjoy cooking, powerlifting, hiking, and building LEGO Technic sets.

STACK

PHP

MariaDB

Redis

JavaScript

Node.js

Socket.io

Express.js

React

Codex

HTML / CSS

Let's turn your idea into reality.

From the first idea to a finished product, I help businesses build reliable software that's designed to grow with them.

Let's start the conversation. Send me a message and I'll reply within 24 hours.