Hi, I'm Miłosz (mi1y)

I code to solve problems, not just to write lines of code. My core stack is PHP and Symfony, but I don't lock myself into one technology – I'm a huge Svelte enthusiast. My priority is ensuring applications are performant, maintainable, and simply achieve business goals.

Selected Projects

Commercial client work, open-source tools, and engineering experiments.

Commercial Work

Legacy Backend Modernization

Commercial Work

Comprehensive modernization of a critical business application. Safely upgraded aging core technologies (Symfony and PHP) across the entire platform, resulting in a +30% performance improvement and restoring active development capabilities.

PHPSymfonyMySQLVue.js
Confidential — NDA

Monolith to Headless CMS Transformation

Commercial Work

Transformed an outdated, slow website into a lightning-fast modern platform. Migrated 250+ articles to a new content management system, allowing the marketing team to publish independently without needing a developer.

AstroPayloadCMSNext.jsTypeScriptVue.js
Confidential — NDA

Polish Tax & Payroll Calculator

Commercial Work

A comprehensive tax calculation engine covering all major Polish employment types: employment contracts, civil law agreements, B2B, and vacation equivalents. Deceptively simple on the surface — deeply complex under the hood.

PHPJavaScript
Confidential — NDA

Open Source & Personal

GitHammy

A high-performance, cross-platform Git client. It combines an intuitive interface with native speed to handle large code repositories without slowing down.

RustTauriSvelteTypeScript
Soon

Kanbanomaly

A serverless task management app built to challenge traditional software architecture. It explores whether modern databases can deliver real-time synchronization and a snappy interface without maintaining a dedicated backend server.

SvelteSupabasePostgreSQLTailwind

toast-mi1y

A lightweight and simple toast notification library for Svelte 5. It has zero external dependencies in the core code, keeping your application fast and lean.

SvelteTypeScriptnpm

Pokemon API

A REST API combining external PokeAPI data with a local MySQL database. Features custom Pokemon creation, a ban registry, Redis caching, and middleware-based authentication — built with Laravel 11 and Docker (Laravel Sail).

LaravelPHPMySQLRedisDocker
Code Soon

RoomBooker

A hotel room reservation management system built with ASP.NET Core MVC and .NET 10. My first project in C# and the .NET ecosystem — featuring Entity Framework Core, PostgreSQL, and full relational CRUD.

ASP.NET CoreC#.NET 10PostgreSQLEntity Framework
Code Soon

Technical Background

Tools I use to build fast and reliable software.

Languages & Frameworks

JavaScript/TypeScript Expert
Symfony Expert
Svelte/SvelteKit Expert
Vue.js 🔴 Advanced
PHP 🔴 Advanced
Tauri 🔴 Advanced
Astro 🔴 Advanced
Rust 🟡 Intermediate
Python 🟡 Intermediate
Next.js 🟡 Intermediate
React 🟡 Intermediate
Laravel 🟡 Intermediate
C#/.NET 🟢 Familiar
Java 🟢 Familiar
C++ 🟢 Familiar

Databases & SQL

SQL Expert
MySQL Expert
PostgreSQL Expert
MongoDB 🟡 Intermediate
Supabase 🟡 Intermediate

Tools & Systems

Git Expert
Linux 🔴 Advanced
Docker 🔴 Advanced
Sourcetree 🟡 Intermediate
Postman 🟡 Intermediate
Rector 🟡 Intermediate

Got a project in mind?

I take on freelance projects and contract work — from legacy system modernizations to building new apps from scratch. Describe your idea and I'll get back to you within 24 hours with my thoughts.