You will get ASP.NET Core bug fixing and application stabilization
Project details
I will diagnose and fix reproducible bugs in your ASP.NET Core application, REST API, database workflow, authentication flow, third-party integration, or deployment configuration.
My work goes beyond a temporary patch. I review the affected code path, reproduce the issue, identify the root cause, implement a maintainable correction, and validate the related workflow before delivery.
I work with C#, ASP.NET Core, Entity Framework Core, SQL Server, REST APIs, authentication and authorization, external APIs, IIS, Windows Server, and production web applications.
Depending on the selected package, the service may include one or more related bug fixes, targeted refactoring, regression testing, SQL or API review, technical delivery notes, and deployment guidance.
You will receive the corrected source code and a concise explanation of the root cause, implemented solution, validation performed, and relevant operational considerations.
This service covers clearly defined, reproducible issues. New features, full rewrites, major architecture changes, extensive UI redesigns, unrelated defects, third-party fees, and infrastructure costs are not included unless separately agreed.
My work goes beyond a temporary patch. I review the affected code path, reproduce the issue, identify the root cause, implement a maintainable correction, and validate the related workflow before delivery.
I work with C#, ASP.NET Core, Entity Framework Core, SQL Server, REST APIs, authentication and authorization, external APIs, IIS, Windows Server, and production web applications.
Depending on the selected package, the service may include one or more related bug fixes, targeted refactoring, regression testing, SQL or API review, technical delivery notes, and deployment guidance.
You will receive the corrected source code and a concise explanation of the root cause, implemented solution, validation performed, and relevant operational considerations.
This service covers clearly defined, reproducible issues. New features, full rewrites, major architecture changes, extensive UI redesigns, unrelated defects, third-party fees, and infrastructure costs are not included unless separately agreed.
Programming Languages
JavaScript, ASP.NET, C#Coding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$99
|
Standard
$249
|
Advanced
$499
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$40
Additional Bug Fix
(+ 1 Day)
+$75
IIS Deployment Support
(+ 2 Days)
+$120
SQL Query Optimization
(+ 2 Days)
+$120Frequently asked questions
About Guney Can
Senior Software Engineer C#/.NET | ASP.NET Core APIs & Payment Systems
Istanbul, Turkey - 12:18 pm local time
I’m a senior C#/.NET developer with 17+ years of professional software development experience. My main focus is ASP.NET Core, REST APIs, SaaS platforms, payment systems, e-commerce infrastructure, SQL Server, and enterprise web applications.
I can help you with:
• Building secure ASP.NET Core APIs and backend systems
• Fixing bugs and completing unfinished .NET projects
• Integrating payment gateways, 3D Secure, webhooks, and external APIs
• Developing SaaS, e-commerce, ERP, and business applications
• Improving SQL Server queries, API performance, and application architecture
• Modernizing legacy ASP.NET and .NET applications
• Deploying applications to IIS, Windows Server, Azure, or Plesk
• Integrating OpenAI and AI-powered document processing features
• Reviewing existing code and creating a practical improvement plan
My core stack includes C#, .NET, ASP.NET Core, Entity Framework Core, SQL Server, REST APIs, JavaScript, HTML, CSS, Git, Docker, IIS, and Azure.
I’m comfortable taking ownership of the full development process—from understanding the business requirement and designing the architecture to implementation, testing, deployment, and production troubleshooting.
You will receive clear communication, maintainable code, realistic estimates, and a solution designed around your actual business needs.
Steps for completing your project
After purchasing the project, send requirements so Guney Can can start the project.
Delivery time starts when Guney Can receives requirements from you.
Guney Can works on your project following the steps below.
Revisions may occur after the delivery date.
Review and reproduce the issue
I will review the source code, environment details, logs, screenshots, and reproduction steps, then reproduce the reported issue in a controlled environment.
Diagnose the root cause
I will trace the affected workflow and identify the underlying code, database, configuration, API, integration, or deployment problem.