Afzaal A.

Is your existing .NET application difficult to maintain, or do you need new features without the risk and cost of a complete rewrite? I’m a Senior .NET Developer with 9+ years of experience building, maintaining, integrating, and modernizing business applications. I help businesses improve existing software, build reliable APIs, solve complex technical problems, and deliver new features without losing sight of the business logic their applications depend on. I work with both legacy .NET applications and modern ASP.NET Core solutions, so I can help whether you need to maintain an established system, upgrade an older application, or build something new. 🛠️ How I can help your business ✅ .NET Development C#, .NET 6/7/8, ASP.NET Core, ASP.NET MVC ASP.NET Web API and REST API development Entity Framework, EF Core, Dapper and ADO.NET Clean Architecture, SOLID principles and maintainable code ✅ Legacy Application Modernization Legacy ASP.NET MVC and Web Forms maintenance Refactoring complex or difficult-to-maintain code Modernizing data-access layers using EF Core and Dapper Migrating older applications toward newer .NET technologies Adding new features while preserving existing business functionality Debugging production issues and identifying root causes ✅ API Development & Integrations Third-party REST API integrations Authentication, OAuth and JWT Webhooks, data mapping and error handling Integration with external business systems Database design, SQL Server and stored procedure optimization ✅ SaaS & Full-Stack Development Multi-tenant applications and partner portals Business workflows, dashboards and role-based access Angular, JavaScript, jQuery, Razor and Bootstrap Azure, Docker and application deployment 🤖 AI-Assisted Development: Cursor, Claude & GitHub Copilot I use modern AI coding tools to improve my development workflow, particularly when working with large or unfamiliar codebases. I use Cursor, Claude and GitHub Copilot to assist with code analysis, refactoring, debugging, repetitive implementation tasks, test scenarios and exploring technical solutions. AI is an accelerator, not a substitute for engineering judgment. I review the generated code, validate the logic, test changes and ensure they fit the application's architecture and requirements. 💼 Experience Across Business-Critical Applications My experience includes healthcare/HIS, SaaS, ERP, telecom, finance, inventory and enterprise applications. For example, I have worked on a multi-tenant Partner Portal SaaS involving .NET technologies, business workflows, database development and integrations with 9+ external APIs. I also have hands-on experience with healthcare systems and modernizing legacy .NET data-access approaches. Why work with me? 9+ years of practical .NET experience Comfortable working with existing codebases and unfamiliar business logic Focused on root-cause analysis, reliability and maintainability Experienced in API integrations and complex business workflows Clear communication, ownership and a client-focused approach Interested in long-term partnerships as well as project-based work Whether you need a senior .NET developer to maintain an existing application, modernize a legacy system, build APIs, integrate external services or deliver new features with AI-assisted development, I can help you move forward with a practical, engineering-focused approach. Have an existing .NET application or a project in mind? Send me a message and let's discuss what you need, the challenges you're facing, and the best way to move forward. #DotNet #SeniorDeveloper #ASPNetMVC #AngularJS #EntityFramework #SQL #MySQL #API #ArtificialIntelligence #WindowsForms #DevExpress #SSRS #SAPCrystalReports #GitScrum #Jira #Trello #AndroidThings #iOS #WebDevelopment #DesktopApplications #FullStackDeveloper