Web Application Performance Optimization
Slow page loads, high backend load, timeouts under traffic — a slow web app is almost always the database, a blocking call, or repeated work, not the framework. I optimize the whole request path: application, queries, caches and infrastructure.
What I Can Help With
Optimize the full request path for a slow web application.
Typical Problems
Relevant Experience
Optimized request paths for traffic-analysis and product-data backends serving real traffic.
What Is Included
How It Works
You share timing data, slow-log/EXPLAIN output and a sample request flow. I trace the request path, confirm the cause, and propose fixes in order of impact. Typically 1-2 days.
Starting from €499
Full-stack performance review and a written report with prioritized recommendations. Implementation is quoted separately.
Frequently Asked Questions
Frontend or backend — where is the time spent?
I focus on the backend: time spent in PHP/Go code, the database, caches and external calls. If you also need frontend optimization, I can point you to the right place.
Related Services
PHP Performance Optimization
Profile and optimize PHP applications that are slow, memory-heavy or consuming too much CPU.
MySQL Performance Optimization
Optimize MySQL queries, indexes and schema for a production workload.
Backend Performance Audit
Find and prioritize the real bottlenecks across your full backend stack.
Slow PHP Application? I'll Find the Bottleneck
Diagnose why a PHP application is slow, no rewrite required.
Systems I've Built
Cenoskop / Levnobot
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.
Niftycent
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.
AnalyticsForWebsite
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.
Paidshield
Chat application with end-to-end encryption.
Built the backend and encryption layer for a secure chat application.
Synopsee
A Cleaner, Safer Internet. Take control of your DNS. Block ads, trackers, and malicious sites with customizable profiles.
Built the DNS resolution backend and profile management system.
spacestat
Rust-based TUI disk usage analyzer.
Built a terminal disk usage tool in Rust.
facha.sk
Find a job or offer your services.
Built the Go backend — API, matching logic and deployment.
remotedaemon.com
Remote security scanner with ping and certificate checking.
Built the scanning daemon and monitoring backend.
Not sure what's wrong?
Write what's happening and paste anything relevant — errors, logs, metrics. I'll have a look and tell you what I think.