Hire the Best Microsoft Visual C++ Programmers & Developers
in Poland

I have more than 15 years of programming experience. As a freelancer, I have broad experience: I developed web (ASP.NET, Python, PHP), desktop (C++, C#, Python — Linux and Windows) and mobile (Android — Java, C++) applications. I list here some of my jobs. C#: * clubspeed.com — a large software suite for family entertainment clubs; included C# code (80%), including CoreApi and ASP.NET Razor, plus PHP (Laravel) and Node.js code (for low-level car racing control tasks). I developed it as a team member. * qadra.com — a financial company; C# code (80%), Python (some microservices are Python/Flask based, 20% of code), AWS-hosted with Docker containers and Lambdas. I developed it as a team member. * enven.nl — implemented from scratch their non-public partners portal: ASP.NET Razor and some CoreApi endpoints. * ASP.NET website for house rentals. * ASP.NET website for remote control of a robotic device via a WebSocket connection. * Vegetable-oil plant automation desktop program (C# + WinCC). Python: * Embeddable fact-checking chat that uses the LangGraph framework to implement a customizable LLM/AI backend (OpenAI, DeepSeek, Hugging Face, or Ollama). It allows administrators to embed the component in their websites so users can ask questions about facts described in articles and verify whether facts listed in an article are true. It included agentic code and many external APIs to check facts (not just asking an LLM), and even computer vision to inspect website photos (OpenCV). Backend is FastAPI. * AI/LLM-based ad selection for a website (FastAPI and LangGraph). It processes website text or chat messages and selects ads of different types related to the content. It contains SDKs for embedding ads on many platforms, including Go, React, and plain HTML. * Polish-language training software, based on Django and LangGraph. * Many small projects: desktop scripts, web scraping (Selenium and related tools), and simple AI agents. C++: * Factory equipment monitoring system (Ubuntu Linux, custom server over TCP/IP, web interface in PHP). * Many small projects, some of which are mentioned in reviews on this profile; many are non-public. * Powerful software for automated ad submission on social networks (massive bots that send millions of messages). PHP: * 20+ websites — without CMS, with my own CMS, and with open-source Drupal, WordPress and Joomla CMSs. * Backends for Android applications. Android: * SOCKS5 proxy application that allows sharing mobile VPN with non-mobile clients via the SOCKS protocol. * Many WebView-based "business card" applications. * Dating-related applications, including erotic puzzles. Human emulation: * Spam bots — I cannot provide a specific list of such software for legal reasons. * Automatic checkout on eBay and similar websites. * PayPal automatic payments. * Data scraping, including air tickets and goods in online stores. Reverse engineering — I cannot provide a specific list of reverse-engineered software for legal reasons. * Java bytecode reverse engineering, including Android. * .NET bytecode reverse engineering. * Machine code for 32-bit and 64-bit x86 and ARM CPUs. Assembler: * High-performance cryptographic library for x86\_64 CPUs.

I’m a Senior .NET Developer with over 15 years of hands-on experience building robust, high-performance desktop applications using technologies like WPF (MVVM), WinUI 3, and Windows Forms. I specialize in delivering smooth, modern user interfaces and stable architecture for Windows-based solutions. Tech Stack & Skills: ▪️ UI/UX: WPF (MVVM), WinUI 3, Windows Forms, GDI+ ▪️ .NET Ecosystem: .NET (C#), ADO.NET, Entity Framework, LINQ, WCF, ASP.NET MVC ▪️ Databases: MS SQL Server, SQLite, LightDB ▪️ APIs & System Integration: WinAPI, Azure integration, Google Cloud Platform ▪️ Other Languages: Solid experience in Python and working with LLMs Education: ▪️ MSc in Artificial Intelligence

I am an experienced programmer. I have delivered over 200 projects, and I would be happy to assist you. FREE PROJECT VALUATION I support small and large projects. Provide a detailed description of your requirements. I will find a suitable solution. MY PORTFOLIO ON YOUTUBE youtube.com/playlist?list=PL6ZCpobLtKdFF86ku-VHp0ws2SMa5Dy86 MY FIELDS OF EXPERTISE: - PHP, - C, - C++, - C#, - Java, - Python, - JavaScript, - HTML, - CSS, - SQL, - OpenGL, - WebGL, - Arduino. CONTACT Each project is valued individually. Send your requirements today using upwork.com I am ready to discuss your project and help you succeed. Looking forward to working with you, Lucas

Desktop application developer with 10 years of software development experience. I have faced a whole variety of tasks and issues, learned how to solve them and delegate or split work among team members. My list of responsibilities among different projects included working on performance improvement tasks, application architecture designing and custom controls development for business logic needs. My skills includes: ▪ C# / .NET ▪ WPF (Windows Presentation Foundation) ▪ UWP (Universal Windows Platform) ▪ Avalonia UI ▪ MVVM (Model View ViewModel) ▪ XAML ▪ Prism ▪ ASP.NET ▪ ASP.NET MVC ▪ Web API ▪ Docker ▪ Entity Framework Core ▪ SQLite ▪ MS SQL Server ▪ Transact SQL ▪ PostgreSQL ▪ RESTful Architecture ▪ Algorithms, data structures and math knowledge ▪ HTML, CSS, JS ▪ JSON, XML