Umang A.

Hi, I'm Umang Amin, a Senior Software Developer from India with 7+ years of professional experience designing, developing, and maintaining enterprise-grade web applications using ASP.NET MVC, .NET Core, C#, SQL Server, JavaScript, jQuery, HTML5, CSS3, and REST APIs. Over the years, I have successfully delivered scalable, secure, and high-performance business applications across multiple domains, including CRM, ERP, Payment Systems, Subscription Platforms, Customer Portals, Business Automation, and Enterprise Management Solutions. I specialize in enhancing existing applications, modernizing legacy systems, optimizing databases, integrating third-party services, and building robust backend architectures that support long-term business growth. Core Expertise ✔ ASP.NET MVC & .NET Core Development ✔ C#, SQL Server & Database Optimization ✔ REST API Design & Third-Party API Integration ✔ Payment Gateway Integration (Stripe, Razorpay, Zoho Billing, PayPal) ✔ Authentication & Authorization (JWT, OAuth, Identity) ✔ Enterprise CRM & Business Management Systems ✔ Performance Tuning & Application Optimization ✔ Bug Fixing, Refactoring & Legacy System Enhancement ✔ Responsive Web Applications (HTML5, CSS3, JavaScript, jQuery) ✔ Git, Azure DevOps & Version Control What I Can Help You With Build custom web applications from concept to deployment Upgrade and enhance existing .NET applications Fix complex bugs and improve application stability Develop secure REST APIs and integrate third-party services Optimize SQL Server databases and application performance Implement payment gateways, authentication, and automation workflows Maintain and modernize enterprise software with clean, scalable architecture I follow industry best practices, write clean and maintainable code, and focus on delivering solutions that are secure, scalable, and easy to extend. Clear communication, transparency, and timely delivery are central to every project I undertake.