services. This is a hands-on senior role covering network architecture, network security, Linux administration, AWS infrastructure, DNS, email systems, monitoring, backup, access control, incident response, and infrastructure automation. The administrator will be expected not only to maintain existing systems, but also to improve their architecture, security, reliability … Define monitoring coverage for servers, networks, services, certificates, backups, storage, and cloud resources. Develop Bash scripts and other automation for provisioning, maintenance, monitoring, and incident response. Manage user accounts, permissions, SSH access, privileged access, service accounts, and access revocation. Maintain backup and disaster-recovery systems. Regularly test backup restoration ...