🇬🇧 English | [🇵🇱 Polski](README_PL.md)

Hi, I'm Arek! 👋

.NET Developer from Poznań with 4+ years of experience building systems for airport infrastructure.

🚀 What I Do

• 🛫 Building systems for international airports (CCTV, baggage tracking, infrastructure monitoring)
• 💻 Specializing in .NET 6-9 backend
• 🤖 Creating full-stack applications using AI-assisted development (Claude Code, Cursor)
• 🏗️ Passionate about clean architecture (DDD, CQRS, Event Sourcing)
• 🔧 Not afraid of DevOps tasks (Ansible, Jenkins, GitHub Actions, Docker)

🏆 Featured Projects

MerMark Editor ⭐⭐

Desktop Markdown editor with built-in Mermaid diagram support

• Stack: Vue 3, TypeScript, TipTap, Tauri 2.0
• Features: WYSIWYG editing, flowchart/sequence/class diagrams, PDF export
• 📦 Download

AI Usage Tracker ⭐

Windows desktop app for tracking Claude Code and Codex CLI usage limits

• Stack: .NET 8, WPF, C#
• Features: Combined usage view, automatic refresh, limit alerts, system tray, Polish/English interface
• Privacy: Uses existing local CLI sessions and never stores authentication tokens
• 📦 Download

PortalForge ⭐

Intranet portal for organizations (~50k LOC, 90% MVP)

• Backend: .NET 8, Clean Architecture, Background Services
• Frontend: Nuxt 3 (AI-assisted)
• Leave management, workflow requests, organizational structure
• 🌐 Live Demo

RecipesAIHelper

Recipe management with AI (OpenAI GPT + Google Gemini)

• PDF extraction, meal planning, shopping lists, Todoist export

InterQuizAI

Technical interview quizzes with web search verification

🛠️ Tech Stack

Backend (main specialization):

!C#
!.NET
!Entity Framework
!REST API
!gRPC

Databases:

!PostgreSQL
!SQL Server
!Firebird
!TimescaleDB

Frontend (AI-assisted):

!Vue.js
!Nuxt
!TypeScript

DevOps:

!Docker
!GitHub Actions
!Jenkins
!Ansible
!Linux

AI-assisted Development:

!Claude
!Cursor
!OpenAI

📜 Certifications

🏆 10xDevs (BRAVE Courses, 2025) | Best Project

• Building AI-first full-stack MVP, CI/CD with AI agents, code review and refactoring with AI
• Working with legacy code, GitHub Actions + LLM, application dockerization

🎓 AI_devs 3 Reloaded (BRAVE Courses, 2025)

• Building AI agents, prompt engineering, multimodal processing (text/audio/image/video)
• RAG systems, vector databases, LLM integration with applications and external services

📫 Contact


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