OT Systems Administrator

Key Responsibilities

• Administer, monitor, and maintain OT systems including: Industrial networks and supporting server infrastructure
• Ensure high availability, reliability, and performance of all plant-floor systems
• Proactively assess system health using tools such as System Auditor and other monitoring platforms
• Network Architecture & Cybersecurity
• Plan, design, and maintain OT network architecture aligned with best practices
• Implement and sustain cybersecurity measures including: Network segmentation, Access control strategies, Monitoring and incident prevention
• Infrastructure Management
• Manage OT server environments, including: Backups and disaster recovery strategies, Patch management aligned with production schedules
• Ensure minimal downtime and adherence to uptime requirements
• Project & Lifecycle Support
• Support automation initiatives, plant expansions, and system upgrades
• Plan and procure Foxboro hardware for expansions and improvements
• Career with external vendors
• Documentation & Continuous Improvement
• Maintain accurate and up-to-date documentation including: Network diagrams, System configurations and backups, Standard Operating Procedures (SOPs)
• Drive continuous improvements in system performance, reliability, and security
• Cross-Functional Collaboration
• Act as the primary technical liaison between: IT, Engineering, Maintenance, Operations, External vendors
• Build and maintain strong working relationships across all stakeholder groups

Qualifications & Experience

• Bachelor’s degree in Information Technology, Engineering, or a related field (or equivalent experience)
• Proven experience in OT/industrial environments, preferably in manufacturing
• Strong knowledge of: Industrial control systems (Foxboro experience preferred), Networking and cybersecurity principles in OT environments, Familiarity with server administration, backup solutions, and patch management
• 5+ years’ experience in systems administration or infrastructure engineering, preferably in OT/industrial environments, 2–3 years in a manufacturing setting
• Experience designing and maintaining OT networks (segmentation, VLANs, firewalls, DMZ); Foxboro a plus, Strong server administration background (VMware/Hyper-V, Windows Server, patching, OT-appropriate backup/recovery)
• Understanding of Purdue Model / ISA-95 architecture, Familiarity with OT cybersecurity frameworks (e.g., NIST, IEC 62443) and implementation of controls, Knowledge of industrial protocols (EtherNet/IP, Profinet, Modbus, OPC-UA)
• Experience in 24/7, safety-critical manufacturing environments with high uptime requirements, Strong documentation practices (network diagrams, configs, change logs, backups), Familiarity with monitoring, asset management, or ticketing tools preferred, Experience with industrial asset visibility tools a plus
• Bachelor’s degree in IT, Computer Science, or related field preferred (or equivalent experience)