Legacy ASP.NET System Modernization & Code Refactoring

@designysoft

Hello, Hope you are doing good. • Refactored and modernized a 10-year-old ASP.NET application by optimizing architecture, SQL queries, security, and introducing Entity Framework with a REST API layer. • Rebuilt the UI with responsive design, stabilized session handling, moved heavy processes to background jobs, and delivered a faster, secure, and scalable system ready for future growth. I am waiting for a positive response from your side. Thanks & Regards

@softsolution2000

I have extensive experience in .NET, C# Programming, Software Architecture, Google App Engine, and MySQL, making me a perfect fit for the Legacy ASP.NET System Modernization & Code Refactoring project. I am confident in my ability to upgrade your system to a modern, scalable platform. Budget adjustments can be made after discussing the full scope, and I am committed to delivering high-quality results within your budget. Please review my 15 years of experience in my profile. Let's discuss the details and get started on this project. I am eager to showcase my dedication and skills.

@nidhip091

Hello, I’ve reviewed your project to upgrade a legacy ASP.NET application into a modern, scalable, and optimized platform. I understand the challenges: performance issues, outdated architecture, duplicated code, slow SQL queries, security flaws, and UI/UX inconsistencies. I’m Nidhi, a Dynamics 365 & .NET professional with 11+ years of experience, specializing in modernizing legacy systems, optimizing workflows, and building secure, maintainable applications. I can help by: Refactoring code and modularizing controllers for maintainability Optimizing SQL queries and stored procedures for performance Implementing Entity Framework and REST APIs for clean data access Rebuilding UI with responsive layouts and stabilizing sessions Moving long-running tasks to background jobs I focus on performance, security, and maintainability, deliver on time, and communicate clearly. I’m fully comfortable with NDA and IP ownership agreements. Flexible hours, part-time or long-term collaboration. Looking forward to discussing how I can help upgrade and future-proof your system. Best regards, Nidhi

@vipulpithiya1448

Greetings sir. I have read the things you want. I consider myself perfect match for this job because I am an experienced developer with 7 years of experience in my field. I have a very strong portfolio too.! I have a keen desire to work with you..!! Waiting for your chance to show my abilities and hard work to you.! I am confident that I can be a good employee for you because I know what you want. Regards Vipul Pithiya Rajkot,Gujrat(India)

@amjad2

Hi there! I’ve reviewed your project and specialize in upgrading legacy ASP.NET applications. I’ll optimize performance, refactor code, and enhance UI/UX to eliminate security flaws and slow SQL queries. Let’s set up a quick meeting to discuss your needs and the next steps. Best Regards, Amjad Iqbal

@sgwtechnology

Dear Client, I am pleased to share an overview of a recent project that closely reflects my approach to modernizing legacy systems. This engagement involved upgrading a 10-year-old ASP.NET application into a modern, scalable, and optimized platform designed for long-term stability and growth. Approach: The existing system faced multiple challenges, including outdated architecture, duplicated code, slow and inefficient SQL queries, security vulnerabilities, and inconsistent UI/UX. My first step was a full codebase refactor, focusing on modularizing controllers, separating concerns, and improving overall code maintainability. To enhance performance and data handling, I optimized stored procedures and introduced Entity Framework for cleaner, more consistent data access. To future-proof the platform, I implemented a RESTful API layer, enabling easy integration with mobile applications and third-party services. On the frontend, the UI was rebuilt using responsive layouts to ensure a consistent experience across devices. Session handling was stabilized to improve reliability, and long-running processes were offloaded to background jobs to prevent blocking and performance bottlenecks. The result was a faster, more secure, and maintainable application, significantly improving performance, scalability, and developer productivity while preparing the system for long-term evolution.

@farrukhazadPak

I will modernize and optimize your 10-year-old ASP.NET application into a fast, secure, and scalable system using current best practices. What I will do: Refactor and clean legacy code (remove duplication, modularize controllers) Optimize MS SQL queries and stored procedures Implement Entity Framework for clean data access Introduce a REST API for future mobile and integrations Rebuild UI with responsive, modern layouts Improve session handling and security Move long-running tasks to background jobs for better performance Result: A faster, secure, and maintainable system ready for long-term growth. I have 6+ years of experience in ASP.NET, ASP.NET Core, and MS SQL, with strong expertise in upgrading legacy enterprise applications. Let’s discuss your code, timeline, and next steps. Regards, Farrukh Azad

@Suresh2871985

With having around 2 decades of experience in software applications development and technology upgradation, I will complete the project in the given timeline. Modernized 17 applications in .Net, SQL and MVC. The next step will be analysing the code base and plan the work.

@shahulhameedsha

Legacy ASP.NET systems usually don’t fail because of features, they fail because small architectural shortcuts compound over time into performance, security, and maintenance risks. My approach is to first identify the high impact bottlenecks (slow queries, tight coupling, duplicated logic) and then refactor incrementally into a clean, modular architecture that’s easier to extend and safer to run. I’ve worked on stabilizing mature .NET applications by improving data access with Entity Framework, introducing REST APIs for future channels, and moving heavy operations into background jobs to restore responsiveness. The goal isn’t just a rewrite. It’s a measurable improvement in speed, security, and developer confidence, delivered with clear documentation so the system remains easy to maintain long after handover.

@MvcDeveloper7

Working with same type of projects since 4+ years with MySQL & .NET to .NET CORE & OpenAI integration from 2 years

@TapanKumar97

I understand you’re looking to transform your 10-year-old ASP.NET application into a modern, scalable, and high-performance platform. Having successfully delivered similar legacy system overhauls, I can confidently address the challenges you’re facing—performance bottlenecks, outdated architecture, duplicated code, slow SQL queries, security vulnerabilities, and inconsistent UI/UX. Here’s how I plan to approach your project: Scope of Work Full Code Refactoring & Architecture Upgrade Modularize controllers and business logic to improve maintainability. Introduce a service-oriented architecture for better separation of concerns. Implement Entity Framework for clean, efficient, and secure data access. Performance Optimization Analyze and optimize slow-running SQL queries and stored procedures. Security Hardening Address existing security flaws with input validation, secure authentication, and data protection measures. REST API Development Build a scalable REST API layer to support future mobile/third-party integrations. UI/UX Revamp Redesign the front end with responsive layouts for consistent cross-device experience. Improve session management for stability and a seamless user journey. Background Job Integration Move long-running tasks to background jobs Testing & Documentation Conduct thorough unit and integration testing. Provide clear documentation for future maintenance.

@hon440hon440

Hello, I’m excited to present to you a high value and cost effective proposal for upgrading your legacy ASP.NET system to ASP.NET Core, RESTful APIs, and a modern responsive UI design. I would be happy to discuss your specific needs in more detail and am ready to start the project immediately. Best Regards, Hany https://www.freelancer.com/u/hon440hon440

@MiguelSalgue

Hi. This is what I do at work on a daily basis so I can ensure a reliable delivery with all the necessary documentation so you can work forward on this in the future.

@satyatech29

Hi, I am a .NET developer with more than 13 years of development experience. I have strong experience in migrating or rewriting legacy .NET applications to the latest .NET Core versions. I assure high code quality and on-time delivery. I look forward to your response. Thanks