Usman G.

I’m a Senior .NET developer specializing in building, integrating, and maintaining reliable web, desktop, and data-driven applications using C#, ASP.NET Core/MVC, Blazor, and SQL Server. I am also helping businesses develop and extend Shopify stores with custom functionality, integrations, and optimized store setups. Since 2006, I’ve worked with startups and established companies on new product development, API integrations, and long-term maintenance of complex applications. Alongside backend development, I support Shopify projects from store setup and theme customization to advanced integrations and automation. 🔹 How I Can Help ⚙️ Backend & Integration Services • Build scalable .NET web applications from scratch • Integrate third-party APIs and payment systems (Stripe, PayPal, Podio, Mailgun, etc.) • Modernize legacy ASP.NET/Web Forms/MVC applications • Improve performance, stability, and maintainability • Provide dependable long-term support and clear communication 🛍️ Shopify Services • Shopify store setup (products, collections, navigation) • Theme customization (Dawn, Kalles etc.,) • Store optimization for performance and usability • App setup and configuration (reviews, payments, shipping) • Custom functionality using APIs and automation 🔧 Technical Expertise Backend: C#, .NET / ASP.NET Core, MVC, Web Forms, Entity Framework, REST APIs Frontend: Blazor, Razor Pages, HTML, CSS, Bootstrap, JavaScript, jQuery eCommerce & Shopify: Shopify store setup, themes customization, Liquid, app & payment gateway integrations Desktop: WinForms Databases: SQL Server, MySQL, PostgreSQL, Firebird Integrations: Payment gateways, CRM integrations, shopify API, data import/export (CSV, Excel, XML, PDF) ⭐ Why Clients Choose Me • Clean, maintainable production-ready solutions • Strong backend foundation + Shopify capability • Fast onboarding for existing or abandoned projects • Strong troubleshooting and problem-solving ability • Clear, responsive communication • Reliable long-term support — not just one-off delivery If you need help building a new .NET application, eCommerce business using Shopify, modernizing an existing system, or integrating third-party services, I’m happy to discuss how I can support your project.