ICS Network/Security Engineer

NOV is seeking a self-motivated ICS Network and Security Engineer to join the Rig Technologies team. In this role, you will work with technical leaders across the Digital Products group to select, deploy, and validate cybersecurity controls that reduce risk and support security and compliance requirements.

You will also assess product network architectures and software implementations against customer requirements. The role has a strong operational technology (OT) networking focus, including secure network design, segmentation, connectivity, and controlled access to rig and industrial systems. You will help ensure that security controls are appropriate for each product, clearly documented, and maintained throughout the product lifecycle.

• Design and implement secure OT network architectures aligned with IEC 62443, NIST 2.0, and Purdue Model standards.
• Configure, manage, and maintain firewalls, VLANs, and Layer 2/3 switches to achieve defense-in-depth segmentation.
• Perform product risk assessments, develop remediation plans, and track mitigation progress.
• Conduct vulnerability assessments, penetration testing, and real-time monitoring of OT environments.
• Develop, enforce, and maintain security policies, procedures, and change-management documentation.
• Collaborate with engineering, operations, and project teams to embed security controls into new and existing systems.
• Maintain up-to-date network topology diagrams, configuration baselines, and incident-response playbooks.
• Provide technical guidance, training, and mentorship to cross-functional staff on OT security best practices.
• Stay current with emerging threats, industry standards, and regulatory requirements affecting industrial networks.
• Support audit readiness and assist with security-clearance requirements as needed.

• Bachelor’s degree in Computer Science, Electrical Engineering, Computer Engineering or a related Cybersecurity discipline.
• 5+ years of hands-on experience securing industrial control system networks.
• Deep knowledge of IEC 62443, NIST Cybersecurity Framework, and Purdue Model security principles.
• Proficiency in firewall configuration, VLAN design, and Layer 2/3 switching technologies.
• Demonstrated expertise in network segmentation, zone-based security, and OT protocol security (e.g., Modbus, OPC-UA, Profinet/Profibus).
• Familiarity with Secure Remote Access and network monitoring architectures.
• Experience conducting product risk assessments and developing remediation plans.
• Strong analytical, problem-solving, and incident-response skills.
• Excellent communication and teamwork abilities across multidisciplinary groups.
• Experience managing and securing OT Environments.
• Ability to obtain and maintain any required security clearance.

Preferred Qualifications

• Relevant certifications such as CISSP, GICSP, CCNA/CCNP Security, or equivalent preferred.
• Experience managing and securing network used in Rig Drilling industry.