I'm David, a 26-year-old undergraduate Computer Science Engineering student at the University of Pécs, Faculty of Engineering and Information Technology, with a dual focus on software development and systems engineering.

I specialize in cross-platform application development using C# and Java, and I manage self-hosted infrastructure and services with tools like Proxmox VE, Docker, and Linux-based networking. Whether it's designing modular software or deploying reliable infrastructure, I enjoy working across the full stack of both development and operations.

• C# / .NET: AvaloniaUI, ASP.NET Core (Blazor, WebAPI, MinimalAPI), EF Core, .NET Core
• Java: Spring Boot, Spring Security, Spring Data, Thymeleaf
• Others: Lua, HTML/CSS/JS, SQL, JSON

• CwATE-MA: A web content management system (WCMS) powered by Microsoft ASP.NET Core
• CwATE-SB: A web content management system (WCMS) powered by Spring framework
• CwATE Theme: Theming and UI layer for the CwATE ecosystem

• Markdig.Extensions.Xmdl (C#)
• Lua processor for Markdig.Extensions.Xmdl (C#)
• CzomPack (C#)
• CzomPack (Java)

• Visual Studio, JetBrains Rider, IntelliJ IDEA
• GitHub, Git CLI
• Docker & Docker Compose
• Package hosting: Private NuGet and Maven repositories

• Cross-platform mobile/desktop apps with Microsoft MAUI
• Cloud-native Java development

• Running Proxmox VE 8+ (migrated from VMware ESXi in late 2023)
• Containerized deployments using Docker
• LXC/KVM virtualization with internal and public network segmentation

I operate a multi-server environment consisting of:

• A dedicated server in Germany for all public-facing production services
• A home production server for internal services and backups
• Multiple homelab/tinkering servers for testing, learning, and experiments

Main services include:

• Reverse proxy stack (Docker-based)
• VPN and DNS servers
• Monitoring stack using Grafana and Prometheus
• Game server panel for personal use
• Dockerized web applications based on CwATE-MA and CwATE-SB
• Various custom utilities and containerized tools

🔎 You can find an overview of my setup here:
Hardware & Infrastructure Overview

• Hardware & software firewalls
• Container isolation, access control, and segmented networks
• System-level monitoring and alerting for proactive defense

• 📄 CV
• 🌐 Personal Website
• 🖥️ Hardware & Infrastructure Overview
• 💼 GitHub Organization
• 👤 Personal GitHub

Thanks for stopping by! I'm always open to new collaborations, ideas, and interesting technical conversations—especially around .NET, Java, systems automation, and homelab infrastructure.