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Fiverr Pro
English
$
USD
I will fix bugs in your nodejs or golang backend
Software Engineer over 5 Years Experience
Hello, I'm Dio Rovelino, a Software Engineer with over 5 years of experience in mobile and backend development. I specialize in building scalable applications using Flutter, Next.js, and Golang.
I ha...
About this Gig
️Please message me before ordering with details about your bug.
I will find and fix bugs in your backend application quickly and efficiently.
What I can fix:
API errors, broken endpoints, 500/400 status codes
Database query issues, slow queries, connection problems
Authentication & authorization bugs
CORS, middleware, and routing issues
Payment gateway & third-party API integration errors
Performance bottlenecks & memory leaks
Deployment & environment-related bugs
Tech stacks I work with:
Node.js (Express, NestJS, Fastify), Python (Django, Flask, FastAPI), PHP (Laravel), PostgreSQL, MySQL, MongoDB, Redis, Docker, AWS
What I need from you:
Access to your codebase (GitHub/GitLab)
Clear description of the bug & expected behavior
Steps to reproduce the issue
Server/environment access if needed
Why me?
5+ years backend experience
Systematic debugging approach, not guesswork
Clear explanation of what caused the bug & how I fixed it
Post-fix verification included
My Portfolio
FAQ
How do I know if my bug is simple or complex?
Simple: config errors, CORS, typos, routing. Complex: auth flows, database logic, third-party integration, race conditions. Message me and I'll assess for free.
Do you need full access to my codebase?
I need read access to the relevant code. For server-side bugs, I may need SSH or environment access. All credentials are handled securely and removed after delivery.
What if the bug isn't fully fixed?
Each package includes revisions. If the same bug persists, I'll fix it at no extra cost within the revision window.
Can you also add new features?
This gig is for bug fixing only. For new features, message me and we can discuss a custom order.
