I will fix bugs in your net API and backend system

L
lucas_kehrwald
L
lucas_kehrwald
Lucas K
fix bugs in your net API and backend system
Full Screen
fix bugs in your net API and backend system
Full Screen
fix bugs in your net API and backend systemfix bugs in your net API and backend system

About this gig

Are you having issues with your .NET API, backend system, database behavior, or REST endpoints?


I can help you investigate and fix backend bugs in .NET applications with a practical and careful approach. I focus on understanding the root cause of the issue, not just applying a quick temporary fix.


What I can help with:


Fix bugs in .NET and C# backend systems

Investigate REST API errors and unexpected responses

Analyze logs and application flow

Check PostgreSQL or SQL database behavior

Fix data validation and business rule issues

Troubleshoot API integrations

Improve reliability without breaking existing features


Before starting, please send me a message with the error details, screenshots, logs, endpoint behavior, or a short explanation of the problem. This helps me understand the complexity and recommend the best package for your case.


I am open to negotiation depending on the project size and complexity.


Send me a message and lets discuss how I can help you fix your API or backend issue.

  • Programming language

    • ASP.NET

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Databases

  • Frontend framework

    • React.js

  • Backend framework

    • Other

Get to know Lucas K

Lucas K

Support Analyst Level 3

  • FromBrazil
  • Member sinceJul 2026
  • Avg. response time1 hour

  • Languages

    Portuguese
I am a software developer focused on backend development, business automation, API integrations, and AI-powered workflows. I work with .NET, C#, REST APIs, PostgreSQL, Docker, and n8n to build reliable solutions that automate repetitive tasks, connect systems, reduce manual work, and improve efficiency. I can help with backend issues, API integrations, database analysis, Docker environments, n8n workflows, AI automations, bug fixing, support, and legacy code analysis. Send me a message and let’s discuss your project. I am open to negotiation.

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