m.k.

infrastructure · backend · networking

About

I build and maintain small systems. Currently focused on distributed storage, network programming and the unglamorous parts of running self-hosted infrastructure that other people can actually use.

Based in central Europe. Available for short-term contract work, mostly Linux ops + Go/Python.

Selected work

netfilter-rewriter
Small library to apply nftables rule sets atomically across a pool of remote hosts.
go · nftables · ssh
tinypool
A bounded connection pool with health-checks, used by a couple of internal tools at $previous-employer.
go · networking
sshd-honeypot-analyzer
Pipeline that collects sshd auth.log entries from a fleet, groups by ASN/origin and produces weekly reports.
python · clickhouse
mirrors/
Personal mirror of open-source release archives. Static delivery, daily/hourly sync from upstreams.
rsync · nginx · cron

Stack / tooling

Contact

For inquiries: see hi@passthrough.top. Response within a few days.

I don't maintain social media presence.