**Worker Type**

Regular

**Job Description**

**Summary**

The System Administrator III is a senior technical contributor responsible for designing, implementing, securing, and maintaining the organization’s core IT infrastructure. This role provides Tier 3 support for complex incidents, leads infrastructure projects, mentors junior staff, and ensures high availability, performance, and security of critical systems.

**Position Responsibilities**

**Infrastructure Design & Administration**

+ Design, install, configure, and maintain servers, virtualization platforms, storage, and core services (e.g., AD, DNS, DHCP, Group Policy).
+ Manage and optimize virtualization environments (e.g., VMware, Nutanx, Hyper-V, or similar) and related storage solutions (SAN/NAS).
+ Administer Windows and/or Linux server environments, including patching, hardening, and lifecycle management.
+ Implement and maintain monitoring, alerting, an...