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USD
I will develop and fix asp net core and blazor web applications
Oleksandr H
About this gig
Need help with an existing .NET application or want to add new functionality?
I can help you develop, improve, or fix applications built with C#, ASP.NET Core, Blazor, and .NET.
I work with both frontend and backend development, including:
- C#, .NET and ASP.NET Core
- Blazor Server and WebAssembly
- REST API development and integration
- Entity Framework Core and SQL databases
- JavaScript and TypeScript
- React and Angular
- Authentication and authorization
- Bug fixing and debugging
- Legacy code refactoring and modernization
- SCORM and e-learning applications
- Existing application improvements and new features
I can work with an existing codebase or implement new functionality based on your requirements.
The scope can vary significantly between .NET projects, so please contact me before ordering. Send me a short description of the task, the technologies used, and, if possible, screenshots or relevant error messages. I will review it and suggest the appropriate package.
You will receive the source code for all implemented changes.
Get to know Oleksandr H
Oleksandr H
Software Developer NET
- FromUkraine
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, Ukrainian, Russian, German
I am a Software Developer with 3+ years of commercial experience developing enterprise applications using C#, ASP.NET Core, Blazor, and SQL Server. I am experienced in backend development, REST API design, and building scalable software following Clean Architecture and SOLID principles across the full software development lifecycle.
My Portfolio
FAQ
Should I contact you before placing an order?
Yes. Please contact me first with a short description of your task. I will review the requirements and recommend the appropriate package.
Can you work with an existing .NET project?
Yes. I can work with existing C#, ASP.NET Core and Blazor applications, including bug fixes, improvements, refactoring and new features.
What technologies do you work with?
My main stack is C#, .NET, ASP.NET Core, Blazor, Web API and Entity Framework Core. I also work with JavaScript, TypeScript, React, Angular, SQL databases, REST APIs and third-party integrations.
Do you work with both frontend and backend development?
Yes. I can work on backend services and APIs as well as frontend applications using Blazor, React, Angular, JavaScript and TypeScript. I can also handle tasks that require changes across the full application stack.
Can you fix bugs instead of developing a new feature?
Yes. I can investigate and fix bugs in existing applications, including backend, frontend, API, database and integration issues. For small issues, the Basic package will usually be suitable.
Can you refactor or modernize existing code?
Yes. I can refactor existing C#/.NET code, simplify legacy implementations, improve project structure, update dependencies, migrate older code to modern .NET, and improve maintainability without unnecessarily rewriting the entire application.
Can you work with SCORM and e-learning applications?
Yes. I have experience working with SCORM-based courses and web applications, including SCORM package integration, course runtime behavior, navigation, responsive layouts, JavaScript fixes, and compatibility issues across desktop and mobile devices.
Do you work with databases and APIs?
Yes. I work with Entity Framework Core, SQL Server, PostgreSQL, MySQL and SQLite, as well as REST APIs and external service integrations.
