At Qualous Technologies, I administer 300+ Linux servers across production, staging, and development environments, maintaining 99.9% uptime through proactive maintenance and troubleshooting.
I've automated 70–80% of system configuration and application deployments with Ansible, reducing provisioning from hours to under 20 minutes. I also manage VMware virtual machines, monthly patching, vulnerability remediation, access controls, Apache, LAMP, Samba, NFS, and Linux storage.
I monitor infrastructure with Zabbix and Checkmk, reducing outage MTTR by 40%, and participate in a 24/7 on-call rotation with average critical-incident MTTR under 45 minutes. My progression from intern to Linux System Administrator has included supporting Linux and Windows environments, web servers, backups, documentation, and Tier 1/2 support.
