I'm a senior backend developer with 10+ years of experience across PHP, Go, MySQL and Elasticsearch. I work directly with clients — no agencies, no middlemen.
I build, fix and optimize backend systems that handle real data and real traffic. My recent work includes Cenoskop — a price comparison engine processing 30M+ products daily, Niftycent — US price intelligence with large-scale scraping infrastructure, and facha.sk — a Go-based job and services marketplace. I specialize in performance optimization, web scraping and crawling, data pipelines, and backend development in PHP and Go.
Slow pages, slow queries, overloaded servers. I find what's slow and make it fast.
New backends, APIs and services built to run in production — not just on your laptop.
Crawling, price monitoring and pipelines that move large amounts of data reliably.
A few of the production systems behind these services.
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.
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.
Rust-based TUI disk usage analyzer.
Built a terminal disk usage tool in Rust.
Find a job or offer your services.
Built the Go backend — API, matching logic and deployment.
Remote security scanner with ping and certificate checking.
Built the scanning daemon and monitoring backend.
Send me a short description — I reply personally and tell you what I think.