System Administrator III

Summary:

The System Administrator III is responsible for providing advanced enterprise systems administration and operational support for STA’s mission‑critical infrastructure environment. This role serves as a senior technical resource responsible for Windows and Linux server administration, Microsoft Hyper‑V virtualization, high availability, cloud and hybrid operations, monitoring, backup and recovery, patch management, and service continuity across on‑premises and cloud environments.

This position is accountable for reliable daily administration and lifecycle execution of STA's enterprise compute platforms, including standard builds, configuration baselines, Hyper‑V cluster operations, capacity planning, operational documentation, recovery readiness, and Tier III incident restoration. The System Administrator III partners with Security, Network Engineering, and operational teams to implement secure, scalable, recoverable, and audit‑ready infrastructure services that support STA's clinical, donor, and business operations.

• Collaborate with Security, Network Engineering, Service Desk, IT leadership, and operational teams to support infrastructure initiatives, datacenter operations, hybrid cloud services, and service continuity.
• Provide clear technical communication during incidents, outages, maintenance windows, recovery activities, vulnerability remediation efforts, and post-incident reviews.
• Maintain and publish detailed technical documentation, standard server builds, runbooks, recovery procedures, and operational handoffs.
• Communicate infrastructure risks, capacity concerns, remediation efforts, implementation plans, rollback considerations, and operational updates to leadership and stakeholders.
• Translate complex technical issues involving compute, virtualization, identity dependencies, backup, cloud platforms, and platform services into practical operational communication for non-technical stakeholders.
• Provide incident communications and post-incident reporting that include root cause, restoration actions, lessons learned and recommended corrective actions.
• Participate in cross-department planning discussions related to infrastructure scalability, operational readiness, remote site dependencies, business continuity, and modernization efforts.

• Manage enterprise patching schedules, maintenance windows, operational deadlines, system lifecycle activities, host updates, certificate renewals, backup upgrades, and platform changes with minimal disruption to operations.
• Support rotating on‑call responsibilities and respond promptly to after-hours incidents, service interruptions, backup failures, monitoring alerts, and infrastructure restoration needs.
• Prioritize infrastructure incidents, operational requests, restore activities, queue work, and project deliverables based on operational risk, service impact, and business urgency.
• Coordinate infrastructure maintenance activities with Security, Network Engineering, Service Desk, and operational stakeholders to align with clinical, donor, and business service requirements.
• Manage patch rings, pre‑ and post‑validation steps, rollback windows, exception handling, and evidence collection in alignment with Security‑owned vulnerability priorities and remediation targets.
• Plan and execute routine restore testing, disaster recovery exercises, health checks, capacity reviews, and operational readiness activities on a defined cadence.
• Balance daily administration, modernization work, incident restoration, documentation, and continuous improvement in a 24/7 mission‑critical environment.

• Administer Windows and Linux server environments supporting mission‑critical clinical, donor, and business workloads, including OS upgrades, role and feature management, certificate maintenance, service account coordination, and system hardening aligned to STA standards.
• Administer Microsoft Hyper‑V platforms, including host lifecycle, cluster health, failover behavior, live migration, storage and networking dependencies, VM provisioning standards, high availability settings, resiliency…