Managed hundreds of VPN servers with Ansible (idempotent roles, rolling updates). Result: reduced drift and deployment time from hours to minutes.

Scaled Zabbix/Nagios for distributed services with alert hygiene and runbooks. Result: fewer noisy alerts, faster incident response.

Deployed GitLab with registry on S3; CI pipelines deploy to AWS EKS via Helm/Terraform. Result: consistent delivery and faster feedback loops.