Sergejs Kaimins
@sergejskaimins
I build resilient bare-metal, network, and observability platforms for high-load production systems.
PolandWhat I'm looking for
I've built and operated high-load infrastructure for Tassvision.ai, Norse Atlantic Airways, and BookedBy/Salon Ultimate, spanning bare-metal analytics, payment systems, and global retail platforms.
At Tassvision.ai, I replaced a proposed $15,000/month cloud setup with a Terraform- and Ansible-provisioned Hetzner bare-metal fleet, reducing monthly hosting costs to $1,900 while improving CPU and disk I/O performance. I also deployed Grafana, Zabbix, and SMART-based diagnostics to enable zero-downtime NVMe drive hot-swaps before data loss.
I focus on Linux kernel tuning, WireGuard mesh networking, CI/CD hardening, DDoS mitigation, and privacy-hardened edge security. I've also built Rust validation tooling and a binary-search IP blocklist engine for sub-millisecond lookups across more than 2 million blocked ranges.
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