Cyber Security Specialist.Information Technology

Job Purpose

To lead and oversee GDI’s information security IT operations, network infrastructure, and Operational Technology (OT) environments, ensuring the confidentiality, integrity, and availability of IT and industrial systems (IACS). The role is responsible for leading IT security operations, vulnerability management, incident response, and compliance in alignment with ISMS (ISO 27001) and relevant industrial cybersecurity standards, including ISA/IEC 62443. The role also provides technical direction and oversight of IT operational functions, including Network Administration, to ensure secure, resilient, and efficient technology service delivery across the organization.

Position Title: Cybersecurity Specialist
Reports to: IT Manager
Department: Information Technology

• Lead and oversee the secure design, implementation, operation, and continuous improvement of GDI’s network infrastructure to ensure availability, performance, resilience, and security across corporate and operational environments.
• Supervise network administration activities, including routers, switches, firewalls, VPN services, wireless networks, communication platforms, and related infrastructure technologies, to ensure compliance with approved security standards, operational requirements, and best practices.
• Ensure reliable and secure connectivity for users, systems, operational technologies, and external integrations through continuous monitoring, performance management, and proactive resolution of network-related issues.
• Enforce network security controls, including segmentation, access control, monitoring, logging, and secure communications, to protect organizational assets and support compliance with ISMS and regulatory requirements.
• Provide technical direction and oversight to Network Administration resources to ensure effective service delivery, compliance with service levels, and consistent implementation of operational and security procedures.
• Coordinate with internal stakeholders and external service providers to support communication systems, data center connectivity, VSAT services, internet services, and third‑party connectivity requirements.
• Support incident response, business continuity, and disaster recovery activities by maintaining network resilience, availability, recoverability, and operational readiness.
• Ensure the security of Operational Technology (OT) and Industrial Automation and Control Systems (IACS) environments through network segmentation, secure remote access controls, monitoring activities, and implementation of applicable industrial cybersecurity requirements (including ISA/IEC 62443 standards).

• Lead and oversee the implementation, operation, and continuous improvement of network security controls and access management frameworks to protect GDI’s information assets, infrastructure, and operational environments.
• Define and enforce secure access requirements relating to authentication, authorization, network segmentation, privileged access, and remote connectivity in alignment with ISMS requirements, cybersecurity standards, and regulatory obligations.
• Oversee administration of identity and access controls across network and security environments and ensure adherence to the principles of least privilege and segregation of duties.
• Direct the configuration, management, and optimization of firewalls, VPNs, Network Access Control (NAC) solutions, intrusion detection and prevention technologies, and related security platforms in coordination with Network Administration resources.
• Monitor and review access rights, privileged accounts, network security events, and security logs to identify unauthorized activities and ensure compliance with approved security requirements.
• Coordinate periodic access reviews, access recertification activities, and remediation actions to maintain appropriate access governance and security compliance.
• Provide technical guidance on secure network architecture, access control design, and security requirements to support business needs while maintaining an effective security…