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Fiverr Pro
English
$
USD
I will fix bugs and clean up the application
Zakk D
About this gig
Is your web app broken, crashing, or behaving inconsistently? I specialize in diagnosing and fixing bugs in React frontends, Python backends (FastAPI, Django), and C#/.NET applications, including full-stack issues that span both layers.
I don't guess. I trace the problem to root cause, fix it properly, and explain what happened so you understand what was wrong and why it's fixed.
What I can fix:
- React rendering issues, broken state, routing errors
- Python/FastAPI backend errors and broken API responses
- C#/.NET application errors and logic bugs
- Database query issues causing wrong or missing data
- Authentication and session bugs
- Performance issues causing slow load times
- Any JavaScript/TypeScript errors
What you'll receive:
- All bugs fixed and tested
- Written summary of what was found and what was changed
- Clean, readable code with no unnecessary rewrites
Not sure if I can help? Message me first and describe the issue. I'll let you know before you order.
Get to know Zakk D
Zakk D
Software Engineer, React, Blazor, NET, Python, PostgreSQL, APIs, AI
- FromUnited States
- Member sinceOct 2025
- Avg. response time10 hours
Languages
English
I'm a full-stack software engineer with experience building production web applications independently. I work across the entire stack, React frontends, REST APIs, PostgreSQL databases, and Docker deployments, and I own every part of the project myself rather than farming pieces out.
My stack: C#, ASP.NET Core, React, FastAPI, Python, PostgreSQL, TypeScript, Node.js, Docker. I've shipped data dashboards, AI-powered platforms, multi-user apps with authentication, and developer tooling. I respond fast, communicate clearly, and don't disappear mid-project.
