Operations Technology Senior Administrator

Domtar is a leading producer of pulp, paper, packaging, tissue and wood products. Through our focus on safety and sustainability, as well as our commitment to operational excellence and our network of facilities across Canada and the United States, Domtar delivers high-quality and cost-effective products to customers around the world.

Our workforce is comprised of 14,000 talented and hardworking individuals. We are proud to offer competitive compensation, a supportive working environment, rewarding career paths and plenty of opportunities for learning and growth.

The location in Fort Mill, (South Carolina, United States), is seeking talent to fill the position of Operations Technology Senior Administrator. This job is full-time permanent.

The Senior Administrator, Operational Technology (OT), is responsible for the administration, support, maintenance, and continuous improvement of Operational Technology infrastructure supporting Domtar manufacturing facilities. This 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.

Key Responsibilities

OT Infrastructure Administration

• 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.

OT Cybersecurity & Compliance

• 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.

Industrial Network & Systems Support

• 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.

Project Delivery & Modernization

• 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.

Operational Support & Continuous Improvement

• 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.

Required Qualifications

• Bachelor's degree in Information Technology, Engineering, Computer Science, or a related discipline, or equivalent combination of education and experience.
• Minimum of five (5) 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.
• Demonstrated ability to manage multiple priorities in a fast-paced manufacturing environment.
• Strong written and verbal communication skills.

Preferred Qualifications

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

Key Competencies

Safety Leadership

Customer Focus

Technical Expertise

Problem Solving

Continuous Improvement

• Collaboration and Teamwork
• Planning and Organization
• Communication and Documentation

Project Coordination

Adaptability and Learning Agility

Physical & Working Conditions

• 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.

Safety Responsibilities

Comply with all company safety policies, procedures, and regulatory requirements.

Promote safe work practices and actively identify opportunities to reduce risk.

Ensure all work performed within manufacturing environments follows established safety protocols.

Support a culture of safety and continuous improvement across all assigned facilities.

You will be required to successfully complete a selection process that could include interviews, an employment background check, a pre-employment drug and alcohol screen, reference verifications, aptitude tests (for some positions), and a fitness-for-duty test (for some positions).

Domtar is an equal-opportunity employer. Qualified applicants will be considered without regard to age, race, color, sex (including gender identity or expression, sexual orientation, and pregnancy), marital status, religion, national origin, genetic information, disability, or veteran status. We are also committed to ensuring reasonable accommodations for individuals protected by Section 503 of the Rehabilitation Act of 1974, and Title I of the Americans with Disability Act of 1990.

Once your application has been submitted, you will receive a confirmation email. If you are selected to interview, you will be contacted by a member of our Human Resources team.

To learn more about our company, consult the Domtar Company Web Site and follow us on LinkedIn,Instagram and Twitter.