FastFlowIPS - DDoS flow detection
High-performance eBPF network monitoring tool tracking per-IP traffic statistics in real time - an open-source alternative to FastNetMon for DDoS detection.
About
The web product and the platform it runs on are usually two teams. I've spent twenty-one years being both - writing the application and carrying the pager for the servers underneath it.
Today I work freelance as a System Reliability Engineer: I build the customer-facing product in Svelte, Node.js and React, and run the infrastructure, BGP network and billing automation behind it - previously as co-owner of a hosting company and data-center.

QA & ISP Operations
Test automation at Kaspersky Club, lead sysadmin & network engineering at ISPs, university labs
Hosting & Support Engineering
L3 support shift leader at YourServerAdmin, lead sysadmin & data-center engineer at VDS Inside
DCXV - Data-Center & Product Engineering
Lead sysadmin > co-owner. Full-stack product development on top of production infrastructure
System Reliability Engineering - Freelance
Self-employed system reliability engineer: infrastructure, monitoring, and full-stack product work for clients
Expertise
The everyday toolkit - from Svelte frontends to core routing.
Selected work
Open-source tools that came out of real infrastructure problems.
High-performance eBPF network monitoring tool tracking per-IP traffic statistics in real time - an open-source alternative to FastNetMon for DDoS detection.
Node-WHOIS-JSON - WHOIS fetch and structured JSON output. Slim and fast, zero dependencies. Published on npm.
Easy WireGuard server setup as a Docker container - kernel plumbing and forwarding rules handled, configuration kept in plain files.
uptime - available for new work
Open to product engineering and infrastructure work - especially things that have to stay up. Tell me what you're building.
Read the CV