Linux & infrastructure
Linux administration, server services, databases, automation and troubleshooting.
Senior IT Administrator · around 20 years of experience
Stable IT. Reduced risk.
I help organisations secure and maintain infrastructure—from Linux, networks and firewalls to Proxmox, tested backups, monitoring and controlled service exposure.
01 / Services
From network and server to recoverable data.
Proxmox & backup
Virtualisation, Proxmox VE/PBS, 3-2-1 backup strategy, encryption and recovery tests.
Networks & security
LAN/WAN, VLAN, OPNsense, VPN, DNS/DHCP, TLS, WAF and access control.
Monitoring
Zabbix monitoring, actionable alerting, dashboards and incident data.
IT audits
Exposure, access, updates, backups and operational resilience with prioritised recommendations.
Migrations
HAProxy, Nginx, TLS, controlled cutovers, validation and rollback planning.
02 / Approach
Evidence before assumptions.
Diagnosis based on logs and metrics, controlled implementation with rollback planning, validation and clear documentation. Remote work is available across Poland; on-site work is agreed according to scope.
Describe the environment or problem.
Include your goal, the main symptom, approximate number of systems or locations, and the expected timeline.
tomasz.skoczek@secinfo.com.pl