Operations Technology Senior Administrator

Domtar Products•Fort Mill, SC

11d

About The Position

The Senior Administrator, Operational Technology (OT), administers, supports, maintains, and continuously improves the Operational Technology infrastructure supporting Domtar manufacturing facilities. The role provides advanced technical expertise for Process Control Network (PCN) environments, including industrial networks, servers, virtualization platforms, cybersecurity technologies, backup and recovery systems, and remote access solutions. Working closely with mill operations, engineering, vendors, and corporate IT teams, the Senior OT Administrator helps ensure OT systems remain secure, reliable, and available to support safe and efficient manufacturing operations. The position provides technical expertise and support for infrastructure modernization, cybersecurity initiatives, and operational support activities across multiple facilities.

Requirements

Bachelor's degree in Information Technology, Engineering, Computer Science, or a related discipline, or an equivalent combination of education and experience.
At least five years of progressive experience supporting Operational Technology (OT), Process Control Networks (PCN), Industrial IT, or manufacturing technology environments.
Experience administering Microsoft Windows Server environments.
Experience supporting virtualization platforms such as VMware.
Experience supporting industrial networking technologies and infrastructure.
Experience with backup, recovery, and business continuity solutions.
Strong technical troubleshooting and problem-solving skills.
Ability to manage multiple priorities in a fast-paced manufacturing environment.
Strong written and verbal communication skills.
Ability to travel up to 25% to manufacturing facilities as required.
Ability to work in industrial environments, including production areas, machine rooms, electrical rooms, and control rooms.
Ability to occasionally lift and move IT and OT equipment weighing up to 25 pounds.
Ability to participate in an on-call rotation and respond to critical operational incidents outside normal business hours.
Ability to wear required personal protective equipment (PPE) while working in manufacturing environments.

Nice To Haves

Experience supporting DCS, PLC, SCADA, MES, Historian, or other industrial control systems infrastructures.
Experience with industrial and enterprise networking, virtualization infrastructure, backup and disaster recovery solutions, cybersecurity monitoring, asset discovery and management, endpoint security, and advanced threat detection/response technologies or similar platforms.
Knowledge of industrial cybersecurity frameworks, including NIST Cybersecurity Framework and ISA/IEC 62443.
Experience in OT infrastructure, cybersecurity, or modernization projects.
Experience in manufacturing, pulp and paper, or other heavy industrial environments.
Professional certifications such as GICSP, Security+, CISSP, VMware VCP, Cisco CCNA, or CCNP.

Responsibilities

Administer and support OT servers, workstations, virtualization platforms, storage systems, and backup solutions.
Maintain Active Directory services, user accounts, security groups, and access controls within OT environments.
Monitor system performance, health, capacity, and availability to ensure reliable operation of critical manufacturing systems.
Coordinate infrastructure upgrades, lifecycle replacements, and technology refresh initiatives.
Develop and maintain technical documentation, standards, and support procedures.
Support disaster recovery and business continuity processes for OT infrastructure.
Implement and maintain cybersecurity controls and standards within OT environments.
Support vulnerability management, patch deployment, endpoint protection, and security monitoring activities.
Participate in security assessments, audits, and remediation efforts.
Ensure compliance with corporate cybersecurity standards and industry best practices.
Assist with cybersecurity incident response, investigation, and recovery activities.
Promote security awareness and adherence to OT cybersecurity policies.
Support and troubleshoot industrial Ethernet networks, switches, firewalls, wireless technologies, and secure remote access solutions.
Diagnose and resolve infrastructure and network issues that impact manufacturing operations.
Maintain network diagrams, asset inventories, and system documentation.
Coordinate vendor support activities and third-party access requirements.
Assist with implementation and support of OT monitoring and management tools.
Participate in OT infrastructure modernization, reliability improvement, and digital transformation initiatives.
Lead technical implementation activities for OT infrastructure projects.
Support the deployment and commissioning of new OT technologies and systems.
Coordinate infrastructure-related project activities with mill personnel, vendors, and project teams.
Contribute to the development and standardization of OT architecture and technical standards.
Provide advanced Tier II and Tier III support for OT systems and infrastructure.
Participate in an on-call rotation to support critical manufacturing operations.
Identify and implement opportunities to improve reliability, security, supportability, and operational efficiency.
Support continuous improvement efforts across the OT organization through process enhancement and knowledge sharing.
Comply with company safety policies, procedures, and regulatory requirements.
Promote safe work practices and actively identify opportunities to reduce risk.
Ensure work performed within manufacturing environments follows established safety protocols.
Support a culture of safety and continuous improvement across assigned facilities.