You will get .Net Developer and Refactoring of your code
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Project details
Streamline and Optimize Your C# .NET Applications with Senior-Level Expertise
I offer expert C# .NET code refactoring to improve performance, maintainability, and scalability. With 15 years as a Senior .NET Developer, I specialize in optimizing code across .NET Core and .NET Framework for backend stability, enhanced functionality, and future-proofing your applications.
My services cover full stack refactoring, including Angular for modern front-end experiences and WPF for robust desktop solutions. With a strategic approach, I ensure your code aligns with both technical best practices and long-term financial efficiency.
Let’s make your application leaner, faster, and easier to maintain, enhancing its performance across all platforms. Whether you need targeted backend optimization or full-stack improvements, my refactoring services are designed to deliver maximum value for your C# .NET project.
I offer expert C# .NET code refactoring to improve performance, maintainability, and scalability. With 15 years as a Senior .NET Developer, I specialize in optimizing code across .NET Core and .NET Framework for backend stability, enhanced functionality, and future-proofing your applications.
My services cover full stack refactoring, including Angular for modern front-end experiences and WPF for robust desktop solutions. With a strategic approach, I ensure your code aligns with both technical best practices and long-term financial efficiency.
Let’s make your application leaner, faster, and easier to maintain, enhancing its performance across all platforms. Whether you need targeted backend optimization or full-stack improvements, my refactoring services are designed to deliver maximum value for your C# .NET project.
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Performance OptimizationWhat's included $3,000
These options are included with the project scope.
$3,000
- Delivery Time 30 days
- Number of Revisions 1
- Source Code
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PS
Philipp S.
Jan 23, 2026
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Oliver S.
Dec 4, 2025
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Sergiy worked on a complex .NET Core backend for our email sending API. He is a clear communicator, detail‑oriented, and consistently solution‑oriented. He took ownership through integration and deployment.
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belal e.
Dec 3, 2025
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Sergiy's performance has been nothing short of exemplary, and his technical expertise was the driving force behind the platform's most innovative features. His deep knowledge of modern AI principles was evident in the seamless deployment of the core features, including the robust Chatbot powered by a cutting-edge LLM. Furthermore, he delivered a highly accurate Image recognition pipeline and proactively implemented specialized, autonomous AI agents to ensure scalable and automated efficiency across the application. Sergiy is an indispensable asset who successfully translated complex machine learning concepts into high-quality, real-world solutions.
WP
Washington P.
Dec 20, 2024
C# Senior Fullstack Developer
Sergiy's expertise in C# development is truly impressive. He consistently delivers high-quality, well-structured code, utilizing best practices like SOLID principles and effective use of async programming. His ability to tackle complex challenges with innovative solutions makes him an invaluable asset to any project.
EH
Eliran H.
Jul 16, 2024
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About Sergiy
AI Developer .NET Developer | .Net | C#
100%
Job Success
Tallinn, Estonia - 6:41 am local time
AI Senior .NET Developer with ✅ 15 years of experience, skilled in C#, .NET Framework, .NET Core, API Integration, and Microsoft Azure. Adept in Full Stack, Mobile, and Backend Development for comprehensive software solutions.
✔ Back-End Development: Expert in creating, supporting, and updating .NET projects; API creation and optimization; integrating AI solutions into .NET projects; and transitioning projects to Microsoft Azure cloud.
✔ Mobile App Development: Proficient in developing cross-platform mobile apps using MAUI and Xamarin.
✔ Full Stack Development: Skilled in building robust websites with ASP.NET MVC, ASP.NET Web API, Next.js, Angular, and React for a full-stack approach.
✔ Desktop Software Development: Experienced in Windows Desktop application development and support using WinForms, WPF, and Unity.
✔ Code Conversion: Skilled in converting code from C, Java, and Python to C#, optimizing for efficiency and maintainability.
As a senior developer, I bring deep expertise across diverse .NET applications, including CFO-level insights for technical strategy, ensuring alignment with business goals.
Steps for completing your project
After purchasing the project, send requirements so Sergiy can start the project.
Delivery time starts when Sergiy receives requirements from you.
Sergiy works on your project following the steps below.
Revisions may occur after the delivery date.
Working Source code
Please provide the working source code for effective refactoring. This ensures a seamless review and optimization process, allowing me to identify areas for improvement and implement enhancements efficiently.