Legacy WCF to .NET 8 Migration

@winlancerinc

With over 12 years of specialized experience in .NET Core, C#, and relevant technologies, I'm confident that I can skillfully tackle your legacy WCF migration project. My extensive expertise also includes Xamarin/MAUI mobile development which will be highly valuable during the modernization process. I've previously accomplished multiple successful migration projects, affirming my capability to adapt and update existing codebases while ensuring functional parity - a critical requirement for your project. Moreover, I've in-depth knowledge in utilizing OAuth, JWT, and other security protocols to secure microservices - an important aspect you've highlighted regarding authentication and authorization flows. Additionally, my proficiency in azure services like Azure Service Bus, Azure Functions, Azure Logic Apps, Azure Key Vault would contribute significantly to the smooth functioning of your new system. Based out of India myself, our collaboration would be facilitated by aligning our time zones and allowing quick code walk-throughs whenever needed. Lastly, as a top-rated freelancer on various platforms including Freelancer.com with a perfect success rate, I guarantee not only successful completion of the required tasks but also the delivery of a comprehensive migration document ensuring future developers can confidently extend the code.

@milansahu2010

Dear Sir/Madam, Hope you are doing well. I am Milan Sahu, Full Stack Developer, 13 years+ experience on .Net, Asp.Net, ASP.NET Core, C#, MVC, WCF, API, SQL Server, Angular, React, Bootstrap, HTML5, Telerik Controls, Payment Gateway Integration etc. I am willing to do your project & want to build a long term relationship. Waiting for your positive reply. Best Regards, Milan Sahu

@QutubHaider

Dear Sir, IT CAN BE DONE & WE HAVE DONE THIS TYPE OF PROJECT AND WILL BE DONE AT YOUR BUDGET You recently advertised your job posting on this website, we have worked on more than 200 computer software, websites/web portals with required API /B2B integrations, and Mobile apps. (ios&android), Betting Bot(odd/even), mobile games. We have more than 200 satisfied clients. Our skill sets:c/c++/c#/Jsp/Asp.Net/PHP/WP/Python/Pearl/swift/android studio/xamrin/react j/native etc. SCOPE of your work: WCF to .NET 8 Migration I WOULD LIKE TO DISCUSS THE PROJECT IN CHAT/ CALL. WE HAVE THE VOICE CALL FACILITY ON FREELANCER. SO IF YOU SEND ME A MESSAGE ON FREELANCER WE WILL HAVE A CALL/CHAT THERE. BUT IT IS MANDATORY THAT YOU INITIATE THE CHAT FIRST SO THAT I CAN REPLY AS PER FREELANCER RULES. Warm Regards, Qutub Haider

@SSRMTasks

Dear client, I have experience in migrating legacy .NET services. I can help your WCF service to API service with required low latency features according to your budget and timelines. I have developed several complex applications including low latency and live streaming applications and can show them for your reference. P.S: ******* I am flexible with my quote and can adjust the delivery timeline to better align with your requirements. Experience ============ I'm a professional .NET developer with extensive experience in building secured trading and business-focused applications, including systems that require live market feed(from external and internal market sources) processing, APIs, including working on complex design projects and leveraging strong debugging skills in business logic. My portfolio: ========== Feel free to explore my portfolio, where you can view the completed projects that highlight my experience in developing web, windows applications with .NET using React, WPF, Devexpress, WCF, Web APIs, Rest and background services etc. These showcase my expertise in clean code practices, design optimization, and seamless backend integrations. Thanks in advance

@ImadEng

Hello I am full time freelancer with more than 8 years of experience in .NET, Desktop & Web Application, Microservice, Python, NEXTJS, React, ANGULAR, Winforms, WPF, SQL Server, .NET Core, WEB APIs, MAUI, MAUI Android and iOS, WCF, Entity Framework, Blazor, React and NODE.JS. I have very solid experience with POS, Banking systems, Inventory Systems, Sales Systems. Please come on chat and lets discuss the project scope and flow in details. Thank you for reading my proposal. Regards M. Imad

@softgoway

Dear Hiring Manager, I’m writing to express my interest in supporting your migration from a legacy WCF/Telerik-based .NET Framework solution to a modern, maintainable .NET 8 REST API. With 11+ years of experience in enterprise .NET development, I’ve successfully modernized multiple large-scale systems, ensuring full functional parity while moving them to the latest frameworks. My first step will be a thorough audit of your solution: mapping WCF endpoints, Telerik Web UI operations, and integration flows. From there, I’ll design equivalent REST endpoints in .NET 8—using Minimal APIs for lightweight performance or ASP.NET Core MVC for structured maintainability, whichever fits best. Key priorities include: • Preserving authentication and authorization flows without changes. • Maintaining identical data manipulation and storage logic. • Migrating and testing all third-party integrations seamlessly. The migration will replace obsolete bindings, modernize security middleware, and validate database operations under .NET 8. I’ll also provide a migration document detailing architecture, endpoints, and environment setup so future developers can extend confidently. Being India-based, I can align easily with your time zone for walkthroughs and quick syncs. I’ll push the final source to your private Git repo, deploy a working build on a test server, and demonstrate functional parity across auth, data operations, and integrations for approval. Best regards

@krishnabhagwat

Hello Sir, As you're looking for 5+ years Experienced .Net Developer For your project. I'm pleased to give my service for same. I have huge experience in building complex enterprise level and multi tenant base web application using asp.net mvc, c#, sql server, Javascript, Azure,JSON, webforms, Bootstrap, EF, LINQ, EFCore, .NetCore, Angular, Typescript, Git & jQuery. Kindly let us know your suitable time for further discussion about this project, in meantime kindly review below clients feedback.. Looking forward to work together... Thanks, Krishna

@nileshpvw

Hi , Read your requirement , and like to work on your project. I have 12 years of experience .My skills are C, C++, html , css , bootstrap , java script , jquery , C# ASP.net ( winform and mvc ) web application using .net core and .net framework . C# WPF and winforms desktop application. Database worked on MS SQL and MY SQL . C# Restful API . Mobile application using Flutter Lets discuss more on the chat .... Thanks ,

@carlosisaacxx

Hi, I’m Carlos Isaac Guzmán Pérez, Full-Stack .NET & Angular Engineer with strong experience modernizing corporate legacy systems (WCF/WebForms/Telerik → .NET 8 REST). I’ve delivered enterprise-grade apps where stability, scalability and security are critical. I also have deep hands-on expertise in Telerik Kendo UI (grids, forms, charts, reporting), ensuring smooth continuity for your corporate frontend once services are migrated. Migration plan: • Audit current WCF services, bindings, auth flows & Telerik data usage. • Build .NET 8 REST API skeleton with auth middleware. • Incremental refactor: port operations with contract tests, validate against Kendo UI. • Hardening & docs: Serilog logging, Swagger, CI/CD pipeline, migration guide. Deliverables: • Fully functional .NET 8 REST API replacing WCF. • Swagger/OpenAPI docs. • Technical migration guide. • Git repo with traceable commits. Timezone & comms: Based in GMT-6 (Mexico) with daily IST overlap for stand-ups or walkthroughs. Clear reporting, milestone-based delivery, and CI/CD visibility. Ready to start immediately and ensure a smooth, risk-controlled migration with functional parity and clean documentation.

@bharatgarg83

Software Professional with 11+ yrs of extensive experience in Software Development across multi-faceted technology environments like C# DOT NET, DOT NET CORE, WEB API, MVC, WCF, WINDOW SERVICES, WEB API, DOCKER, MICRO SERVICES ETC. Having over 3+ Years of Experience in developing single page Applications using MEAN (Angular, NodeJS, Express and MongoDB) Technologies as Full Stack Developer.

@abidalifgr

Hi! We are FGR INFOTECH LLP, a growing team of skilled developers passionate about delivering smart, scalable, and secure digital solutions. ? Who We Are: Based in India, we are a technology-driven company specializing in custom software development, web applications, and IT consulting services. We combine industry knowledge with technical expertise to help businesses streamline their operations and grow faster. ? Our Developer Strengths: Proficient in modern tech stacks (Flutter, React Native, JavaScript, Node.js, .NET, Angular, React, MySQL, etc.) Agile development with clean, maintainable, and scalable code Focus on performance, security, and user experience Strong problem-solving capabilities and quick adaptability Excellent communication and project management ? Why Work With Us: Flexible engagement models (short or long-term) Dedicated support and regular updates Commitment to quality and timely delivery Transparent, client-focused approach We’re excited to partner with businesses that value innovation and long-term collaboration. Let’s discuss your project needs and explore how we can contribute to your success. Let’s build something great together

@BiitcodetTech

I understand how important this migration is—you want to move from your current WCF + Telerik + .NET Framework setup to .NET 8 without losing any of the core functionality that keeps your system running. That’s exactly where I can help. I’ll start by carefully auditing your existing endpoints and mapping them one by one into clean, maintainable REST APIs in .NET 8. From there, I’ll modernize the service layer, update security, and make sure data operations and integrations behave exactly the same as today. Once it’s all working, I’ll also provide clear documentation so your team can easily maintain and extend it in the future. Since I’m based in India, it’ll be easy for us to connect quickly whenever you need walkthroughs or updates. I’d really love the chance to work with you on this migration and ensure your application runs smoothly on .NET 8 while keeping everything stable. Thanks Megha.R

@manojpanja17

Hello, I have 15+ years of experience in the .NET ecosystem and have successfully migrated several legacy applications (WCF, WebForms, Telerik controls) to ASP.NET Core/.NET 8 REST APIs. I understand the critical requirement here: keep auth flows, data operations, and third-party integrations fully intact while modernizing the service layer. My approach is to first audit and map all WCF endpoints and Telerik operations into equivalent REST APIs. Within the initial phase, I will deliver the mapping document, project structure, and a pilot migration module running on .NET 8. This ensures you can validate the direction quickly. Once approved, we’ll extend to the full migration of all endpoints and integrations with functional parity. Being India-based, I’m available in your time zone for walkthroughs and quick calls. I can start immediately and provide a working build plus documentation as per your acceptance criteria. Let’s connect so I can review the existing solution and propose a detailed milestone plan.

@sanganijignessh

Hi, I'm an experienced C# and .NET developer with 9+ years of hands-on experience building high-performance desktop, web, and service applications. My core strength lies in ASP.NET Core, where I’ve delivered scalable, cross-platform solutions using modern design patterns and MVC architecture. Key Skills: C# / ASP.NET Core RESTful APIs, authentication, and third-party integrations Entity Framework Core, SQL Server, and MySQL Azure DevOps, Git, CI/CD, and Docker HTML5/CSS3, responsive UI development NUnit for test-driven development React.js for dynamic frontend components Office 365 Integration: Data retrieval, upload, and automation using Microsoft Graph API Agile development, clean architecture, and secure coding practices I'm a proactive problem-solver who focuses on clean, maintainable code and efficient delivery. Confident I can contribute to your team with both backend depth and frontend flexibility. I have worked on many projects as per your requirement but that not customer facing website and that required some password to login so cannot share that project details, but if you want we can connect And show you project that i have worked on. Looking forward to discussing further!