Job Description

System Administrator (Control Systems) – L3

This role requires a seasoned professional with a minimum of 8 years of experience across the relevant technology domains. Key competencies include subject-matter expertise and hands-on system administration experience with Microsoft Windows operating systems, VMware, Linux, and Nutanix technologies. Experience supporting operations technology (OT) or control system environments is highly preferred. Candidates should be adept at rapid issue resolution, risk mitigation, and dependency analysis. This position must also comply with all applicable utility-industry regulatory requirements, best practices, and operational guidelines to ensure the continuous availability of critical control system environments.

Essential Skills and Responsibilities

• Administer and manage Windows (2008, 2012, 2016, 2019) and Linux (RHEL 7.x, 8.x, 9.x) servers

• Support and manage server virtualization, provisioning, physical server maintenance, security compliance, and daily operations of control system environments

• Maintain the full lifecycle of physical servers, including provisioning, maintenance, and decommissioning

• Manage virtualized server environments through configuration, implementation, monitoring, and support

• Maintain VMware VDI environments through configuration, implementation, and ongoing support

• Ensure compliance with security baselines through configuration, remediation, and routine audit activities

• Monitor server infrastructure health, system performance, and resource utilization; identify trends and anomalies

• Maintain continuous compliance with information-security policies, NERC CIP standards, and other technical requirements, including reporting and remediation of non-compliance issues

• Apply security patches and software updates on a regular schedule

• 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 a rotating on-call support schedule for control system operations

Technical Skill Requirements

• Strong experience with Windows, Active Directory, VMware vSphere and vRealize Suite (vRA, vRO), Horizon View, Nutanix, and Linux in complex, heterogeneous environments

• Solid understanding of virtualization technologies, including VMware and Hyper-V

• Hands-on diagnostics and troubleshooting skills across listed technologies and product suites

• Knowledge of high-availability architectures and disaster recovery environments

• Experience optimizing VMware performance, managing virtual sessions, and allocating resources across physical and virtual systems

• Expertise in Active Directory, DNS, DHCP, IIS, ADFS, Group Policies, FTP, and SFTP

• Ability to implement AD infrastructure and perform recovery of AD Domain Controllers, DNS, WINS, and DHCP servers

• Strong understanding of domain controller replication

• Experience creating, testing, and deploying Group Policies

• Proficiency with Microsoft clusters, load balancing, file and print server management, and Windows security

• Advanced PowerShell scripting and task automation skills

• Working knowledge of data center operations, including physical hardware placement, racking, and cabling

• Experience supporting hardware and coordinating with OEM vendors for break-fix, maintenance, and large-scale upgrades/migrations

• Ability to collaborate with multiple support teams and stakeholders to maintain smooth daily operations

• Experience with RAID management and array controllers

• Proficiency with backup products, protocol suites, and command-line utilities

• Familiarity with OEM hardware (e.g., Dell, HP) and remote management tools

• Strong understanding of system fault-tolerance design, business continuity, and disaster recovery planning

• Prior experience in operations technology or control-system environments is preferred

Team Culture

The team operates in a fast-paced, energetic, and highly motivated environment. Candidates are expected to quickly integrate into a results-driven, solution-oriented culture focused on delivering high-quality outcomes in complex and challenging projects. Team members are self-motivated, set ambitious yet attainable goals, and believe strongly in effort-based success.