Something is wrong with your backend?
Slow queries. Workers that keep dying. Elasticsearch eating all the RAM. Old PHP code nobody wants to touch.
I'm a backend developer with 10+ years in production. Describe what's happening — I dig through the code, logs and metrics, tell you what's actually wrong, and fix it. No agency, no middlemen.
Things people usually call me about
If any of this sounds familiar, write me. A few lines are enough.
Diagnosis
You don't know where the problem is. Send what you have — code, logs, metrics, EXPLAIN output, config. I'll look at it and write up what the bug is and what changing it would take.
Slow backend
Slow pages and queries, CPU or RAM at the ceiling, workers that can't keep up. I look for the cause first.
PHP and Go
I change existing PHP — fixes, performance, modifications. When PHP isn't the right tool for a piece, I rewrite that piece in Go.
Crawlers and pipelines
Crawlers, ETL, Elasticsearch indexing, aggregations, scheduled jobs. Millions of records.
Old PHP code
Old PHP applications with no documentation. Migrations, database problems.
One person, no middlemen.
You talk to the developer
You write to me and I answer. The person reading your logs is the person writing the fix.
Production experience at scale
I've run crawlers processing 30M+ products a day.
Fixed price after diagnosis
First I find out what's wrong — for a fixed fee. Then you get a fixed price for the fix. No hourly meter running while I'm still learning your system.
How It Works
Write what's happening
A few sentences. What's happening, when it started, what you've tried.
I look at the system
Code, logs, metrics, config. Whatever exists.
I write up what I found
What the bug is and what the fix would cost.
I fix it
Within the agreed scope.
Systems I've Built and Run
A few of the production systems behind these services.
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.
Something broken?
Write me. Say what's happening and paste whatever you have — an error, a slow query, a graph. I reply myself.
Write: what's happening · error message · log or metric · stack · URL.