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Fiverr Pro
English
$
USD
I will fix and optimize your slow or broken backend and database
Pavel V
About this gig
Is your app or website slow, freezing, or crashing and you don't even know why?
That's exactly what I figure out.
I've spent 30 years fixing production systems other people gave up on. Slow queries, N+1 loops, broken endpoints, apps that crawl as data grows, systems that fall over under load I find the real cause and fix it. No guessing, no magic one-liner.
What I fix:
- Slow databases and queries (indexing, rework, caching, summary tables)
- Broken or buggy backend code
- APIs and integrations that fail or lag
- Systems that can't handle traffic
Stack: TypeScript / Node.js (Express, NestJS), SQL and MongoDB databases. Background across FinTech, ERP and high-load platforms, including a system with 900,000+ users.
How it works:
- BASIC I diagnose one slow or broken part and fix it
- STANDARD full fix of one performance or bug issue
- PREMIUM multiple bottlenecks fixed, tested, with a short report
Before you order, message me what's slow or breaking. I'll tell you straight if I can fix it no wasted orders.
Get to know Pavel V
Pavel V
Senior Systems Architect
- FromPortugal
- Member sinceDec 2014
Languages
English, Russian, Hebrew, Ukrainian
30 years making slow, unstable production systems fast and reliable again. Slow queries, N+1 loops, apps that crawl as data grows, systems that crash under load — I find the real bottleneck and fix it.
No magic one-liner. I dig in and solve it properly: query rework, indexing, caching, summary tables, architecture — in production, without a full rewrite.
Experience across FinTech, ERP and high-load platforms, including a system with 900,000+ users. Tell me what's slow or breaking and I'll tell you straight if I can fix it.
FAQ
I don't know what's causing the problem. Can you still help?
Yes — that's the job. Finding the real cause is the first thing I do. You don't need to diagnose it yourself.
Which package should I choose?
Message me what's slow or breaking first. I'll tell you honestly which package fits — or if it's a quick fix, the smallest one.
Do you work with my stack?
I work in TypeScript / Node.js (Express, NestJS) with both SQL and MongoDB databases. If you're on something close, message me and I'll tell you straight if I can help.
Will you need access to my code and database?
Yes — to fix it properly I'll need access to the relevant code and a way to reproduce the issue. We agree on secure access before starting.
What if it can't be fixed the way you hoped?
I diagnose before promising. If I can't fix it, I tell you upfront — I won't take an order I can't deliver.
Can you also build new features or a full app?
Yes. This gig is for fixing and optimizing, but I build full backends and apps too — message me for a custom offer.
