Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix bugs in asp net core angular and sql server apps
Bastian Matias
About this gig
ASP.NET Core, Angular & SQL Server Bug Fix Service
Is your application showing errors, broken screens, failed forms, API issues, or database problems?
I can help identify the root cause and fix issues in ASP.NET Core, Angular, and SQL Server applications.
This service is designed for specific bugs and technical issues that require investigation, troubleshooting, and implementation of a solution.
What I can help with
ASP.NET Core backend errors
Angular frontend issues
SQL Server queries, procedures, and database problems
Form validation issues
API endpoint problems
Authentication and authorization issues
Performance-related bugs
Business logic errors
Integration troubleshooting
What is included
Bug investigation
Root cause analysis
Code fix implementation
Testing and validation
Fix documentation
Before ordering
Please contact me first and provide:
A description of the problem
Error messages (if available)
Screenshots or videos
Access details if required
This gig is intended for fixing specific issues. Large features, complete modules, or major system redesigns may require a custom offer.
I look forward to helping you get your application working again.
Get to know Bastian Matias
Bastian Matias
Semi Senior NET Fullstack Developer
- FromChile
- Member sinceJun 2026
- Avg. response time1 hour
Languages
English, Spanish
I am a Semi Senior .NET Fullstack Developer with over 3 years of experience in banking, pension funds, and ERP sectors. I specialize in building and maintaining enterprise web modules using ASP.NET MVC/Core, SQL Server, and Angular. I focus on delivering maintainable solutions, ensuring operational continuity, and providing functional value to the business through modern development practices.
My Portfolio
Other Software Development Services I Offer
FAQ
What types of bugs can you fix?
I can fix backend, frontend, database, API integration, authentication, validation, performance and deployment related issues in ASP.NET Core, Angular and SQL Server applications.
Do you work with existing projects?
Yes. Most of my work involves analyzing and fixing issues in existing applications. Please provide access to the source code and a clear description of the problem.
What information do you need before starting?
A description of the issue, reproduction steps, screenshots or error messages, and access to the relevant source code or repository.
Can you fix urgent bugs?
Yes. If your issue is urgent, you can use the Extra Fast Delivery option. Please contact me before ordering for critical production issues.
Do you fix database issues?
Yes. I can troubleshoot SQL Server queries, stored procedures, Entity Framework Core issues, migrations and database performance problems.
Do you provide source code changes?
Yes. All fixes are delivered directly in your project code with clear explanations of the changes made.
What if the issue is larger than expected?
If the problem requires significant development work beyond the scope of the Gig, I will discuss the options with you before proceeding.
