Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix asp net core web API errors bugs and crashes fast
Olu Adeleke
About this gig
FINAL OPTIMIZED VERSION (use this)
API crashing, throwing errors, or not working? Message me first.
I quickly diagnose and fix ASP.NET Core Web API issues so your application runs smoothly and reliably in production. I can often identify the root cause fast and start immediately.
Are you dealing with ASP.NET Core Web API errors, crashes, or broken endpoints?
I fix API bugs, failures, and performance issues so your system is stable, secure, and working as expected.
With 10+ years of backend and cloud experience, I deliver clean, production-ready fixes not temporary patches.
What I can fix
- API bugs, crashes, and 500 errors
- Broken or failing endpoints
- Authentication and authorization issues
- API integration and third-party errors
- SQL Server-related API problems
- Deployment and configuration issues
- Performance issues (available as extra)
What you get
- Root-cause analysis (not guesswork)
- Clean, maintainable, production-ready code
- Tested and stable fixes
- Clear communication and updates
What I need from you
- Code access (GitHub/ZIP)
- Error message or screenshot
- Failing endpoint or use case
- Hosting details (optional)
Send me a message Ill help you get it working fast and reliably.
Get to know Olu Adeleke
Olu Adeleke
Senior NET and SQL Developer Fix APIs Bugs and Database Issues Fast
- FromUnited States
- Member sinceDec 2025
Languages
English
API crashing? SQL Server slow? Azure deployment failing?
I fix ASP.NET Core API bugs, optimize SQL performance, and resolve Azure issues fast—no downtime or guesswork.
Senior .NET/Azure engineer with 10+ years experience in production systems.
✔ Fix API errors & crashes
✔ Tune slow SQL queries
✔ Troubleshoot Azure services
I fix root causes—not temporary patches.
Fast response. Clear communication. Reliable results.
Stuck on a critical issue? Message me—I can start immediately.
My Portfolio
Other Software Development Services I Offer
FAQ
What does “one bug fix” include?
One bug fix includes identifying the root cause and resolving a single issue (e.g., 500 error, auth failure, or broken endpoint). If multiple issues are found, I’ll clearly explain and recommend the best approach before proceeding.
Do you add new features or build full APIs?
This gig focuses on fixing issues and stabilizing existing APIs. For new features or full API development, I can provide a custom offer based on your requirements.
What do you need from me to get started?
To get started, I typically need: • Access to your code (GitHub or ZIP) • Error message or screenshot • The failing endpoint or issue description • Hosting details (if relevant) The more details you provide, the faster I can resolve your issue.
Can you fix production or urgent issues?
Yes. I regularly work on production issues and urgent API failures. If your issue is time-sensitive, please message me first so I can prioritize and confirm availability.
Should I message you before ordering?
Yes, especially for complex or unclear issues. A quick message helps me understand your problem and ensures you get the right solution, faster.
