Maksym C.

I’m a Senior Full-Stack Software Developer with 10+ years of experience building scalable web applications, backend systems, API integrations, and high-load software solutions using C#, .NET, JavaScript, SQL, and modern database technologies. I have 3+ years of team lead experience and 8+ years of telecom technology experience, where reliability, performance, scalability, and clean architecture are critical. I specialize in solving complex technical problems, including memory leaks, database performance optimization, API architecture, real-time systems, and high-load backend development. My main focus is delivering production-ready software that is stable, maintainable, well-documented, and easy to scale. Core Expertise - Full-Stack Web Development - Backend Development & Architecture - REST API Development & API Integration - ASP.NET Core / ASP.NET MVC / Web API - Database Design & SQL Optimization - High-Load Systems & Performance Optimization - Memory Leak Detection & Debugging - Real-Time Applications with SignalR - Workflow-Driven Applications - Message Broker Integration with Kafka - Unity3D Game Development - Mobile, Desktop, and VR Application Development Technical Stack Backend & Software Development: C#, .NET Framework, .NET Core, ASP.NET Core, ASP.NET MVC, Web API, Entity Framework, Entity Framework Core, ADO.NET, WCF, C/C++ Frontend & Web Development: JavaScript, HTML, CSS, AJAX, Bootstrap, jQuery, ASP.NET Web Forms Databases: Microsoft SQL Server, MySQL, SQLite, MongoDB API Integrations: Amazon API, Facebook API, Twitter API, PlayFab, Firebase, third-party REST APIs Workflow & Automation Systems: Elsa Workflows, Windows Workflow Foundation, workflow-driven applications Real-Time & Messaging: SignalR, Kafka, real-time communication systems, high-load backend services Desktop Development: WPF, Windows Forms, MFC Mobile Development: iOS, Android Game Development: Unity3D, XNA, Photon Engine, PlayFab, UFPS, Lean Touch, Unity Anima2D VR Development: Oculus Rift, HTC Vive Tools & Collaboration: Git, SVN, TFS, Bitbucket, Jira, Redmine, Visual Studio, Xcode, WinDbg, ReSharper What I Can Help You Build I can help you with: Scalable web applications Reliable REST API development Complex API integrations High-performance backend systems SQL database design and optimization Existing application debugging and stabilization Workflow automation systems Real-time applications Unity3D games and interactive applications Production-ready software architecture Why Work With Me I write clean, scalable, and maintainable code with clear structure and documentation. I can work independently or lead a development team, communicate clearly, and take ownership of complex technical tasks from planning to delivery. My goal is to build software that works reliably, performs well under load, and is easy to maintain long after the first release.