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I'm looking for an experienced Visual Basic (.NET) developer to work on my existing website. The site is built on an old legacy version of VB.NET and needs bringing up to date. The work will include: Upgrading the project to the latest supported .NET Framework. Fixing existing bugs and issues. Improving performance and stability. Adding new features and improving existing functionality. General maintenance and ongoing support. I'm looking for someone who has worked with older VB.NET applications before and understands how to modernise legacy code without breaking the system. Please only apply if you have solid experience with: Visual Basic (.NET) ASP.NET SQL Server Legacy .NET applications When you apply, please send: A few examples of similar projects you've worked on. Your experience with VB.NET. Whether you're available for ongoing work. Your hourly rate or fixed price. This is not just a one-off project. I'm looking for someone reliable who can continue maintaining and improving the website long term.
Project ID: 40531866
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165 freelancers are bidding on average £471 GBP for this job

As an experienced and trusted VB.NET developer with over a decade of hands-on experience in legacy applications, I offer unique value to your project. My proficiency in Visual Basic (.NET), ASP.NET, SQL Server, alongside my dozens of successful projects involving the modernization of legacy code, position me perfectly to handle every aspect of your website update. I understand the specific challenges that come with upgrading and maintaining older VB.NET applications without compromising stability, performance, or functionality. My commitment to measurable outcomes and long-term technical partnership complement your intention for ongoing maintenance and support. Moreover, my tech stack doesn't end with VB.NET alone; I also have comprehensive knowledge of .NET Core, ASP.NET, C#, and other languages like Python and Node.js that enrich my problem-solving abilities. By partnering with me, you're gaining a seasoned expert who crafts future-proof solutions by leveraging emerging technologies like AI/ML and cloud-ready architectures while keeping your business goals at the forefront of the process. Let's bring your website up-to-date together!
£500 GBP in 7 days
8.4
8.4

Hi, Full stack web developer, with 18+ years of experience. Service List: ============== -Backend Web Development (.NET Framework, .NET Core, Nodejs) -Frontend Web Development (Angular, React) -Database handling (MSSQL, MYSQL) -Web servers Handling (IIS) -Cloud Platform handling (Azure, GCR) -Mobile App Development : ANDROID (.NET Maui) -Payment Gateway integrations (Paypal, Stripe) -System Programming (C#, VB.NET, Python) -Front End Programming (Javascript, Typescript) I believe, I have the necessary skills and experience, to complete this project. Please do consider for the project. Regards Deepinder Singh
£600 GBP in 15 days
7.1
7.1

Upgrading your legacy VB.NET application... I read your preference for EU developers. While I am based internationally, I work strictly on European/UK business hours to ensure zero communication delays and real-time collaboration. I specialize in stepping into older ASP.NET/VB.NET environments and modernizing the code without breaking the existing core system. To address your specific requests: VB.NET Experience: I have extensive experience rewriting, debugging, and maintaining legacy VB.NET and SQL Server architectures. Ongoing Availability: I am highly reliable and looking for exactly this kind of long-term maintenance relationship. I am ready to review your current architecture today. Quick technical question: For the upgrade, are we migrating to the latest stable .NET Framework (4.8) to preserve existing ASP.NET Web Forms compatibility, or are you looking to fully rewrite and port the system over to .NET Core/6/8?
£480 GBP in 14 days
6.6
6.6

Hello, I have read the job description and I am interested in this job. I would like to know more about the VB.NET application which has to be upgraded. I have 19 years experience in developing products using VB.NET ASP.NET MVC, Azure, ASP.NET, C# Programming. Regards, Jai Singh
£500 GBP in 7 days
6.5
6.5

Hi, ★★★ Visual Basic (.NET) Expert ★★★ 4+ Years of Experience ★★★ I understand you're looking to modernize your existing website built on VB.NET. I will upgrade your project to the latest supported .NET Framework, fix existing bugs, improve performance and stability, and add new features as needed. My approach will ensure that the legacy code is modernized without breaking the existing system. I have solid experience with legacy .NET applications and can provide ongoing support and maintenance as required. Questions: 1. Could you specify the most critical bugs that need fixing? 2. Are there any specific new features you want to prioritize? 3. What is your preferred method of communication for ongoing updates? Ready to get started!
£250 GBP in 10 days
6.2
6.2

As an experienced and versatile developer, I am confident that I can bring your legacy VB.NET website up to date and even more. With over 13 years in the industry, I have completed various projects that revolve around highly customized python web automation, scraping, AI, data extraction and tailoring websites like yours to meet modern standards. From Sports data extraction from platforms like FlashScore, Wyscout, & Fotmob to Web3 and Blockchain development involving integration on Polygon, Ethereum, Binance Smart Chain (BSC), and Solana. For projects exactly like yours, I've worked on similar tasks such as upgrading websites to latest .NET framework versions; fixing bugs and existing issues; boosting performance and stability; adding new features & improving existing functionality; as well as providing general maintenance and support. Given the ongoing nature of this project, my full-stack proficiency will provide you not only development but maintenance and support which is equally important. When considering availability, my schedule is flexible enough for ongoing work. My hourly rate is fair and matched by the unmatched value you'll be getting. Feel free to check out some of my past projects or get in touch directly for more details. Look forward to working together!
£250 GBP in 1 day
5.5
5.5

With experience modernizing legacy VB.NET applications, I understand the importance of upgrading to the latest .NET Framework while maintaining system stability. How can we ensure a seamless transition to improve the website's performance and functionality? Regards, Yogesh Kumar
£430 GBP in 9 days
5.3
5.3

Hello Dear! Greetings from Toriqul Global Solutions! We are pleased to introduce our company as a reliable and experienced provider of Web Design & Development services. Founded and led by Engineer Toriqul Islam, a B.Sc. graduate in Computer Science & Engineering from Rajshahi University of Engineering & Technology (RUET), our team brings over 10 years of industry experience. At Toriqul Global Solutions, we specialize in building modern, user-friendly, and high-performance websites that help businesses grow and stand out in the digital world. Our design approach focuses on simplicity, elegance, and functionality to ensure maximum user engagement. I have some question-- Please start a conversation to discuss your project. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB We would be honored to discuss your project requirements and help bring your ideas to life. Thank you for your time and consideration. Warm Regards, Toriqul Global Solutions
£250 GBP in 4 days
5.4
5.4

⭐⭐⭐⭐⭐ Upgrade Your Legacy VB.NET Website to Modern Standards ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and noticed you're looking for an experienced Visual Basic (.NET) developer. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for VB.NET applications. I will upgrade your site to the latest .NET Framework, fix bugs, and enhance performance while adding new features. ➡️ Why Me? I can easily modernize your existing VB.NET website as I have 5 years of experience in Visual Basic, ASP.NET, and SQL Server. My background includes improving legacy applications, ensuring stability, and providing ongoing support. I have a strong grip on troubleshooting and enhancing performance without disrupting existing functionality. ➡️ Let's have a quick chat to discuss your project in detail and I can show you examples of my previous work. Looking forward to discussing this with you! ➡️ Skills & Experience: ✅ Visual Basic (.NET) ✅ ASP.NET ✅ SQL Server ✅ Legacy .NET Applications ✅ Bug Fixing ✅ Performance Optimization ✅ Feature Development ✅ Code Modernization ✅ Software Maintenance ✅ Integration Skills ✅ Troubleshooting ✅ Ongoing Support Waiting for your response! Best Regards, Zohaib
£350 GBP in 2 days
5.4
5.4

✋ Hi There!!! ✋ The Goal of the project:- MODERNISE AND MAINTAIN A LEGACY VB.NET WEBSITE BY UPGRADING TO THE LATEST .NET FRAMEWORK, IMPROVING PERFORMANCE, FIXING BUGS, AND ADDING NEW FEATURES FOR LONG TERM STABILITY. I carefully read the complete project description and understand that you need an experienced VB.NET developer to upgrade a legacy ASP.NET system, resolve existing issues, enhance performance, and provide ongoing maintenance while ensuring the system remains stable during modernization. With 9+ years experience as a full stack developer, I am the best fit because I have strong experience working with legacy .NET systems, SQL Server, and application modernization projects. * Upgrade legacy VB.NET application to latest supported .NET Framework safely. * Fix bugs, improve performance, and enhance stability of existing system. * Maintain SQL Server integration and implement new features without breaking current functionality. I will provide UI improvements, database management, testing, debugging, deployment support, and full source code delivery at project completion. I have completed similar legacy ASP.NET and VB.NET modernization projects with long term maintenance and optimization. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
£254 GBP in 4 days
4.9
4.9

Hi There!!! ★★★★ (Legacy VB.NET Modernization & Long-Term Maintenance for Scalable ASP.NET System) ★★★★ Project understanding: I understand you have an existing legacy VB.NET website that needs upgrading to latest .NET framework, bug fixing, performance improvements, and new feature development. You are also looking for long-term support to modernize and maintain the system without breaking existing functionality. Services: ⚜ Legacy VB.NET application upgrade to latest .NET / .NET Core ⚜ ASP.NET backend bug fixing & stability improvements ⚜ SQL Server optimization & database maintenance ⚜ Performance tuning & code refactoring for old modules ⚜ New feature development & system enhancement ⚜ Ongoing maintenance & long-term technical support ⚜ Application monitoring & reliability improvements I have experience working with legacy .NET systems and modernizing older VB.NET and ASP.NET applications into more stable and scalable versions. I focus on careful migration, ensuring no disruption to existing workflows. My approach will be step-by-step: code audit, safe upgrade plan, testing environment setup, then gradual modernization with performance checks. I am also available for long-term support and continuous improvements. Let’s connect and discuss your current architecture and next steps. Warm Regards, Farhin B.
£256 GBP in 10 days
4.8
4.8

Hi, this is Jorge from IT GLOBAL SOLUTION LLC, based in FL, United States. I’ve worked on legacy ASP.NET/VB.NET applications like the one you’re building, especially modernization efforts that upgrade older VB.NET codebases while stabilizing SQL Server performance. Your goal to update the platform while preserving existing behavior is clear and achievable. My approach starts with a full codebase and dependency assessment to map the ASP.NET structure, identify legacy .NET Framework targets, and pinpoint risky coupling points. Then I’ll define an upgrade path to the latest supported .NET Framework (or to .NET 6 where feasible) while keeping the web application contract stable, including config changes, binding redirects, and VB.NET compatibility fixes. For stability and performance, I’ll add lightweight monitoring (request timing, error tracking, and key SQL timings), then review hotspots in ASP.NET request handling and SQL Server queries (indexes, execution plans, parameterization, and connection usage). Bugs will be handled with clear repro steps, targeted regression coverage to protect existing behavior, and small refactors where validation is straightforward. Schema changes will follow safe SQL Server migration scripts and a well-defined data model. I’ll keep the work clean and maintainable with Git integration and documentation so you can extend it long-term. Happy to share relevant work and discuss the best structure for your goals. Best, Jorge
£500 GBP in 7 days
4.8
4.8

Hi there, I see you’re looking for an experienced VB.NET developer to update your existing website built on an older legacy version. It’s essential to modernize the code while ensuring stability and performance, and I believe my 4+ years of experience with VB.NET and legacy applications can help you achieve that. My approach would involve first assessing the current system to identify bugs and performance issues, then upgrading it to the latest .NET Framework. I would also focus on enhancing existing features and adding new functionality to improve user experience. I’m available for ongoing maintenance and support, so you can rely on me for future improvements as well. One question I have is: are there specific features you’re looking to add during this upgrade process? Best regards, Arslan Shahid
£250 GBP in 7 days
4.9
4.9

Hi, I am a full stack AI developer with 8 years of rich experience. I am familiar with VB.NET, ASP.NET, SQL Server, .NET Framework, and .NET Core. For this project, the most important part is modernizing the legacy application while maintaining stability and compatibility with the existing business logic. I can upgrade the VB.NET codebase, resolve existing issues, improve performance, and implement new features without disrupting current functionality. I will focus on clean migration, long-term maintainability, and reliable ongoing support. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
£250 GBP in 7 days
4.8
4.8

⚠️ If you're not happy, you don’t pay. ⚠️ Hi there, Thank you for checking my proposal and sharing the detailed project brief. I can update your existing website built with an older version of VB.NET to the latest framework, ensuring improved performance and stability. I will deliver: • Upgrade to the latest supported .NET Framework • Bug fixes and issue resolution • Performance and stability enhancements • New feature additions and existing functionality improvements • Ongoing maintenance and support You will also receive: • Detailed documentation for the updated code • Training sessions for ongoing support I am confident I can execute your vision professionally and efficiently. Looking forward to discussing timeline and next steps. Best regards, Chirag
£550 GBP in 7 days
4.5
4.5

Hello, With my extensive experience in web development, specifically with VB.NET and ASP.NET, I am well-suited to tackle the task of modernizing your legacy VB.NET website. Having successfully completed several similar projects, I am aware of the complexities involved with updating old code bases and can guarantee a smooth transition for your website to a more up-to-date .NET framework. In addition, my familiarity with SQL Server will be useful for troubleshooting existing bugs and reinforcing security. Hiring me means not just getting a short-term solution, but a long-term partner for your website maintenance and improvements. This is crucial for ensuring the stability and performance of your site over time. I take meticulous care in testing and validating my work and leave no room for errors or poor performance. My clients appreciate the detailed reporting and feedback that I provide to them, which keeps them informed and reassured about the progress being made. As an added bonus, selecting me means working with someone who values and adheres to deadlines without compromising on quality. Let's not allow confusion to hold us back and start creating digital masterpieces together that enhance your online presence! Let's chat at your convenience to discuss further how we can take your VB.NET website to new heights! Thanks!
£600 GBP in 4 days
5.6
5.6

Hi, The core issue here is not just upgrading VB.NET but safely modernizing a legacy ASP.NET system without breaking existing production logic or database dependencies that were never designed for modern .NET structures. You mentioned upgrading to the latest supported .NET Framework, fixing bugs, improving performance, and extending functionality in a SQL Server-backed legacy VB.NET application, which typically requires a careful step-by-step migration rather than a full rewrite. I will first stabilize the current system, upgrade it incrementally to a supported .NET version, resolve existing bugs, optimize database interactions, and then extend features while keeping system behavior intact. What version is the current VB.NET/ASP.NET project running on, and is there any existing documentation for the database schema and business logic? Best Regards, Fizza Nadeem K
£250 GBP in 4 days
4.7
4.7

Hello, this is a legacy ASP.NET modernization problem more than a feature task, and the success path depends on how safely the current VB.NET codebase can be upgraded without destabilizing working business flows. The real engineering risk is regression during framework uplift when presentation, business rules, and data access are tightly coupled and there is limited test coverage. I usually structure this kind of work by isolating upgrade blockers first, then separating stability fixes from functional changes so the system can move forward in controlled steps. The closest work I’ve done in this context is Enterprise ProxyTool Client App and Dent-Cloud, both long-lived production systems where architecture boundaries, reliability, and maintainability mattered more than greenfield speed. I’d approach this by auditing the current application surface, identifying framework and dependency constraints, then mapping which modules can be upgraded directly versus which need containment or refactoring. For SQL Server-backed systems, the key tradeoff is usually between a fast compatibility pass and a safer staged modernization. If useful, I can start by sketching an upgrade-risk map for the application and identifying the highest-regression areas before any code changes. Clifton
£500 GBP in 7 days
4.6
4.6

Hello, Please check my profile. I have strong experience in ASP.NET, VB, Visual Studio, .NET Core. I am sure you can notice my skill. I see that you're looking for someone to update and maintain your existing website built on the older version of VB.NET, and I couldn't be a better fit. I specialize in VB.NET and ASP.NET, and I have extensive experience in upgrading legacy code keeping it up-to-date without breaking any functionality or system. Moreover, I have a strong background in SQL Server which will help me efficiently de-bug your site, ensuring improved performance and stability. One thing that sets me apart is my long term vision for projects. I understand the need for consistent maintenance and support, especially in the case of legacy systems. You can count on me not just for a one-off upgrade but also ongoing support. My hourly rate is $45 and my previous experiences include upgrading old .NET applications. I am sure I can support to complete your project for long term. Best Regards
£500 GBP in 7 days
4.8
4.8

I can help modernize your legacy VB.NET ASP.NET system while keeping it stable and production-safe throughout the upgrade process. My approach would start with a full codebase audit to identify framework dependencies, deprecated APIs, performance bottlenecks, and risky upgrade paths. I’d then migrate the project incrementally to the latest supported .NET Framework version, ensuring each module is tested before moving forward to avoid breaking existing functionality. Alongside the upgrade, I’ll fix bugs, optimise SQL Server queries and data access layers, and refactor key areas of the VB.NET code to improve maintainability and performance. I can also implement new features in a backward-compatible way so the system remains stable for users during development. I’m available for ongoing maintenance and long-term support, and can work on both fixes and continuous improvements as needed.
£250 GBP in 3 days
4.3
4.3

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