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Fiverr Pro
English
$
USD
I will debug and fix your python, fastapi, and celery backend issues
Asad Hussain
About this gig
Is your backend crashing, or are your background tasks failing without explanation? Stop wasting hours staring at logs and let an expert backend engineer handle the troubleshooting for you.
I specialize in identifying and resolving deep-rooted bugs in Python, FastAPI, and Celery systems. Whether its a database connection leak, a race condition in your task queue, or a simple syntax error, I provide production-ready fixes that prioritize system stability and performance.
What I Can Fix For You:
- FastAPI & Python Logic: Resolving 500 Internal Server Errors, authentication failures, and API performance bottlenecks.
- Celery & Task Queues: Debugging worker crashes, task retries, and broker connection issues with Redis or RabbitMQ.
- PostgreSQL & SQLAlchemy: Fixing slow queries, deadlocks, migration errors, and database connection pooling issues.
- Deployment & Environments: Resolving issues with Docker containers or shell-based deployment scripts.
- Security Patches: Identifying and closing vulnerabilities like phishing vulnerabilities or authentication bypasses.
Please send your error logs before placing an order so I can assess the complexity and provide an accurate timeline.
Get to know Asad Hussain
Asad Hussain
I will develop maintainable Python backend systems for your business
- FromPakistan
- Member sinceJul 2022
- Avg. response time1 hour
Languages
Urdu, English, Hindi
Looking for a backend engineer who can turn your idea into a reliable system? You’re in the right place.
I’m a Backend Engineer with 5+ years of experience building high-performance systems using Python and FastAPI. I specialize in designing efficient APIs, optimizing databases, and developing reliable microservices.
I’ve worked on end-to-end products including a DevSecOps platform and a fleet management system, handling real-time data, notifications, and system integrations. My expertise includes Python, PostgreSQL, Redis, Docker, and deployments.
Let’s build something great together.
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FAQ
Can you fix my bug immediately?
I prioritize bug fix orders due to their urgency. If you message me with the error log first, I can often provide a timeline and start working within a few hours to get your system back online.
What information do you need to start?
To resolve the issue quickly, I need the specific error message (traceback), a description of when the bug occurs, and access to the relevant code files or repository.
My FastAPI app is slow but not crashing. Is that a "bug"?
Yes, I treat performance bottlenecks as "performance bugs." I can analyze your PostgreSQL queries and FastAPI middleware to identify and fix what is slowing down your response times.
Will you document the fix?
Absolutely. I don't just patch the code; I provide a brief explanation of why the bug occurred and how the fix prevents it from happening again, maintaining your system's long-term health.
Can you help with deployment or Docker errors?
Yes, I can troubleshoot deploy.sh scripts, Docker container failures, and environment configuration issues that prevent your backend from running correctly in production.
What if the bug is larger than expected?
If my initial investigation reveals a deeper architectural issue, I will stop and discuss it with you immediately. We can then adjust the scope or move to a more comprehensive system redesign if necessary.
