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Fiverr Pro
English
$
USD
I will fix production server crashes, high cpu and API errors
Nazar H
Level 2
About this gig
Is your live web app crashing, running slowly, or showing server/API errors?
I help diagnose and fix scoped production issues in ASP.NET Core, Node.js/MERN, PostgreSQL, Docker and Linux VPS environments. My focus is root-cause analysis, practical fixes and verification.
I can help with:
- Application crashes, 500/502/503 errors, timeouts and deployment failures
- High CPU/RAM usage, slow APIs and connection problems
- PostgreSQL queries, connection pooling and database bottlenecks
- Docker configuration, logs and startup failures
- Production performance tuning and regression checks
My process: review logs, isolate the cause, explain the findings, implement the agreed fix, test and document the result.
Basic includes diagnosis and a written report only. Standard covers one agreed fix. Premium covers up to two agreed issues with optimization and verification.
Please contact me before ordering to confirm the problem, tech stack and scope. Complex outages, third-party outages and ongoing maintenance require a custom offer.
Get to know Nazar H
Nazar H
Packaging Brand Designer, Full Stack Web Developer
Level 2
- FromPakistan
- Member sinceJun 2018
- Avg. response time1 hour
- Last delivery4 days
Languages
Urdu, English, French, German
I'm Nazar, a full-stack developer and packaging designer. I build web applications and troubleshoot production crashes, API errors, high CPU/RAM usage and database bottlenecks using ASP.NET Core/C#, Node.js/Express, MERN, PostgreSQL and Docker.
I also create brand identities, product labels and print-ready packaging. My approach combines clear communication, agreed scope and attention to detail, from diagnosing issues and verifying fixes to preparing polished design files. Message me with your project or issue so we can define the right solution.
My Portfolio
FAQ
Can you fix a website or application that keeps crashing?
Yes. I can investigate server logs, application errors, database performance and deployment configuration to identify the likely cause. Fixing the issue depends on the findings and agreed scope.
Do you work with ASP.NET Core and Node.js?
Yes. My main experience includes ASP.NET Core, C#, Node.js, Express.js, MERN, PostgreSQL and production deployments.
Can you fix high CPU and memory usage?
I can investigate resource usage, inefficient queries, application bottlenecks and related configuration issues, then recommend or implement appropriate fixes.
Do you fix PostgreSQL database issues?
Yes. I can troubleshoot slow queries, connection pooling, database performance and application-to-database connectivity.
Will you guarantee my application never crashes again?
No responsible developer can guarantee that. My goal is to identify and address the agreed problems, test the changes, and recommend improvements that reduce the risk of repeated failures.
Do you need access to my production server?
Not necessarily. I can begin by reviewing sanitized logs, error reports and relevant code. If access is needed, we will arrange appropriate limited permissions through secure, Fiverr-compliant methods.
What if my problem is more complex than the package allows?
Please contact me first. I can assess the requirements and provide a custom Fiverr offer with clearly defined deliverables.
