Is your PHP application getting slower under load? I profile production PHP, find the real bottleneck — whether it's a slow query, a misconfigured opcache, repeated work in a loop or a memory leak — and optimize it.
I work with plain PHP and Symfony/Laravel stacks, using Xdebug, Blackfire, tideways and php-spx profiling data, plus query logs and slow-log analysis to back every change.
Profile and optimize PHP applications that are slow, memory-heavy or consuming too much CPU.
Profiled and optimized the PHP backend for Cenoskop (cenoskop.sk) — a price comparison engine processing 30M+ products daily. Used Blackfire to find hot paths in Symfony, fixed unbounded queries and opcache misconfiguration that were causing response time spikes under load.
You share what you see — timings, slow-log, profiling output. I reproduce the bottleneck with profiling, confirm the cause with data, implement the fix, and verify the improvement with before/after measurements. Most single hot paths take a few hours. Full profiling across an application takes a day.
Full profiling and a written set of prioritized recommendations. Implementation of changes is quoted separately.
A profiling pass — I instrument the application with Xdebug or Blackfire, reproduce the slow path, and identify the exact lines/functions responsible.
Yes — profiling and slow-log analysis only need read access. I avoid changing code in production; fixes are proposed and applied together.
Other problems I help with.
Diagnose why a PHP application is slow, no rewrite required.
Details →Find what causes PHP memory usage to grow until the process dies.
Details →Optimize MySQL queries, indexes and schema for a production workload.
Details →Find and prioritize the real bottlenecks across your full backend stack.
Details →Relevant production work.
Crawler monitoring millions of products. Processing 30M products daily and comparing them.
Built and maintain the full crawling pipeline — from scraping through Elasticsearch indexing to price comparison.
Price intelligence engine for the US market. Processing large-scale product data.
Built the data pipeline and crawling infrastructure for large-scale US product monitoring.
Custom solution for collecting and evaluating traffic metrics with emphasis on processing speed and minimizing backend load.
Designed and built the backend for fast traffic metric collection and evaluation.
Chat application with end-to-end encryption.
Built the backend and encryption layer for a secure chat application.
Find a job or offer your services.
Built the Go backend — API, matching logic and deployment.
Describe the problem in a few lines — I'll look at it and tell you what I think.