Andrei C.

Senior Linux and infrastructure engineer with 17 years of hands-on experience running production systems for web hosting, SaaS, and enterprise workloads. I own and operate ServerSpan, so I'm not just consulting on best practices — I live with the consequences of my own architecture decisions every day.

What I help clients with:

- Linux server administration and hardening (Debian, Ubuntu, AlmaLinux; NGINX, Apache, MariaDB/MySQL, PHP-FPM)

- Proxmox VE / ESXi virtualisation, clustering, backup, and migration

- Web hosting control panels: cPanel/WHM, DirectAdmin, including automation and migration between them

- Managed services and day-2 operations: monitoring, backups, patching, incident response

- Server migrations and consolidations, including multi-tenant hosting fleets

- Network administration: VLANs, routing, firewalls (iptables/nftables, pfSense), IPv4/IPv6 dual-stack, BGP basics

- Infrastructure cost and performance optimisation for small and mid-size operators

Certifications: ARISTA Networks, Microsoft Security, cPanel, DirectAdmin, Proxmox, IPv6 Professional.

I work best with businesses that need a senior operator who ships — not a junior who learns on their dime. Happy to take on retainers, one-off audits, migrations, or embedded project work. Remote only.