Senior L3 System Admin

Job Summary

Server And Vm Management

• Deploy, configure, and maintain physical and virtual servers.
• Manage core services: DNS, DHCP, KMS, NAS/File Servers, Certificate Authority.
• Monitor CPU, memory, disk utilization, and respond to alerts proactively.
• Apply OS and middleware hardening per CIS and ISO 27001 standards.
• Perform patching, firmware updates, and vulnerability remediation.

Azure Management

• Manage Azure networking components: VNETs, NSGs, ASGs, Load Balancers, Traffic Manager, Front Door, VPN, ExpressRoute, and DNS zones.
• Administer Azure VMs, compute, storage, AKS clusters, container instances, and ACR.
• Implement backup, restore, HA, DR, and security best practices.
• Enforce access controls (RBAC, JIT, MFA) and identity management.
• Monitor Azure resources, logs, alerts, and optimize performance.

Container Platform Management

• Provide L3 administration for container platforms (e.g., Kubernetes, Docker).
• Monitor platform health, stability, and performance.
• Apply patches, upgrades, and platform maintenance in coordination with DHA.
• Troubleshoot and resolve platform-level incidents affecting availability or security.
• Track resource utilization, generate dashboards, and provide operational reporting.
• Manage administrative access and enforce account audits.
• Document procedures for health checks, server provisioning, and incident escalation.
• Liaise with vendors for server maintenance, warranty, and support issues.

General Responsibilities

• Participate in change management, incident management, and problem management activities.
• Maintain procedural documentation and SOPs.
• Ensure compliance with organizational security policies and industry standards.
• Collaborate with cross-functional teams and vendors for seamless operations.