Sr. System Administrator

• Manage and maintain Linux and Windows servers across virtualized environments.
• Handle VM configurations, monitoring, and optimization for performance and reliability.
• Oversee OS-level upgrades, patching, and lifecycle management.
• Apply system hardening standards (CIS, ISO 27001 practices).
• Manage and maintain system firewalls, endpoint security, and intrusion prevention.
• Implement and monitor regular security updates, vulnerability assessments, and patch management.
• Monitor system logs, performance metrics, and alerts to ensure uptime and stability.
• Troubleshoot system-level issues, including hardware, OS, and virtualization layers.
• Create and maintain documentation, runbooks, and incident response procedures.
• Implement and monitor system backups and disaster recovery procedures.
• Ensure data integrity, redundancy, and compliance with retention policies.
• Work with network, DevOps, and application teams to support deployment and integration.
• Coordinate with datacenter provider for escalations related to hardware or connectivity.
• Provide technical guidance on system-related improvements and automation opportunities.