<p>Job SummarySystems Administrator to support a 24/7 industrial plant (~400 users), maintaining secure, reliable IT infrastructure while enabling connectivity between plant-floor (OT) systems and enterprise IT. This role is critical to uptime, cybersecurity, and operational continuity.</p> <p>Core Responsibilities</p> <p>Manage servers, endpoints, Active Directory, and core network services. Ensure high system availability through monitoring, performance tuning, and proactive support. Secure and maintain network infrastructure (switches, firewalls, IT/OT segmentation). Troubleshoot issues across servers, networks, and enterprise applications. Lead patching, updates, and vulnerability remediation efforts. Apply cybersecurity controls aligned with enterprise and industrial standards. Support OT system connectivity and integration with enterprise platforms. Partner with operations, engineering, and IT to support production systems. Maintain clear documentation of systems, networks, and procedures. Support incident response and root cause analysis for outages and security events.</p> <p>Requirements</p> <p>5+ years in systems, infrastructure, or network administration (Bachelor's preferred). Strong experience with Windows Server and Active Directory. Solid networking fundamentals (TCP/IP, VLANs, routing, switching, firewalls). Exposure to OT/DCS environments and IT/OT network segmentation. Experience with monitoring, patching, and endpoint management tools. Proven troubleshooting skills in fast-paced or industrial environments. Ability to work cross-functionally with technical and operations teams. Cybersecurity awareness across enterprise and industrial systems. Relevant certifications (CompTIA Network+, Security+, Microsoft, etc.) are a plus. Experience in manufacturing, chemical, or other industrial settings preferred.</p>