System Administrator - L3

Responsibilities

• Manage and administer Windows Server (2012‑2025) and Linux (RHEL 7‑9) environments.
• Support and manage server virtualization, provisioning, physical server maintenance, security compliance, and daily operation of control system environments.
• Maintain the physical server lifecycle, including provisioning, maintenance, and decommissioning of hardware.
• Maintain the virtualized server environment through configuration, implementation, management, and support activities.
• Maintain Nutanix and VMware VDI environments via configuration, implementation, management, and support activities.
• Maintain security baseline compliance, perform remediation, and report on compliance through routine audits.
• Monitor server infrastructure health, service performance, and utilization; report trends and anomalies.
• Implement and maintain continuous compliance with information security policies, NERC CIP standards, and related technical standards; remediate non‑compliances.
• Apply regular security patches and software updates using Microsoft SCCM and Red Hat Satellite.
• Provide Tier‑3 engineering support and business continuity support for control system infrastructure.
• Collaborate with application, network, security, and functional teams supporting control system tools and applications.
• Participate in an on‑call control system support rotation cycle.

Requirements

• Minimum 8 years of experience in the listed technology areas.
• Subject‑matter expertise and system‑administrator experience with Microsoft Windows OS, VMware, Linux OS, and Nutanix technologies.
• Understanding of utility industry regulatory requirements and best practices to ensure 24/7 availability of control system environments.
• Preferred experience in operations technology or control system environments.

Skills

• Core experience with Windows, Active Directory, Nutanix Prism Central, VMware vSphere, vRealize Suite (vRA, vRO), Horizon View, and Linux in global, heterogeneous environments.
• Strong knowledge of virtualization technologies (Nutanix, Hyper‑V, VMware).
• Hands‑on diagnostics and troubleshooting of the above technologies.
• Experience with highly available and disaster‑recovery environments; performance tuning of Nutanix and VMware servers and virtual sessions.
• Expertise in Active Directory, DNS, DHCP, IIS, ADFS, Group Policies, FTP/SFTP, and AD infrastructure implementation and recovery.
• In‑depth knowledge of domain controller replication and Group Policy creation, testing, and implementation.
• Proficiency with Microsoft clusters, load balancing, file/print server management, and Windows security.
• Advanced PowerShell scripting and task automation.
• Comprehensive understanding of data‑center environments, hardware placement, racking, and cabling.
• Experience coordinating with hardware/OEM vendors (DELL/HP) for break‑fix, upgrades, and migrations.
• RAID management and array controller expertise.
• Backup product knowledge and command‑line utilities for protocol suites.
• System fault‑tolerance design, business continuity, and disaster‑recovery planning.

Team Culture

Our team is fast‑paced, highly energetic, motivated, and hardworking. We expect candidates to integrate into a results‑driven, solution‑oriented culture from day one. We achieve high‑quality results on challenging projects, believing outcomes stem from effort rather than chance, and we set challenging yet realistic personal goals.