Primary Responsibilities

• Understand the unique requirements of OT environments, including SCADA systems, PLCs, DCS, and other industrial control systems.
• Configure, monitor, and maintain commercial and custom firewalls to safeguard the network from external and internal threats.
• Develop and enforce firewall rules and policies that align with security best practices and regulatory requirements.
• Regularly review and update firewall configurations to ensure optimal performance and compliance with security standards.
• Troubleshoot complex network and firewall issues and provide solutions in a timely manner.
• Administer and support Linux, Unix, and Windows-based systems, ensuring they are hardened and secure for use in OT environments.
• Design and implement disaster recovery strategies, ensuring business continuity for critical OT systems.
• Perform regular system backups, disaster recovery drills, and document all procedures to ensure rapid recovery during incidents.
• Conduct thorough risk assessments to identify network vulnerabilities, potential threats, and gaps in security posture.
• Identify and resolve network and firewall security issues promptly and effectively.

Qualifications

• Bachelor’s degree in Computer Science, Information Security, or a related field, or equivalent work experience.
• 6+ years of experience in firewall configuration and network security management.
• Proven experience securing OT networks and industrial control systems, including SCADA, PLCs, and DCS.
• In-depth knowledge of firewalls (both commercial and custom), IDS/IPS, VPN, SSL, encryption, and other network security technologies.
• Strong understanding of TCP/IP, networking protocols (e.g., routing, switching, VLAN), and network segmentation.
• Experience with security tools, vulnerability scanning software, and network monitoring solutions.
• Familiarity with cybersecurity frameworks like IEC 62443, NIST 800-82, and similar.
• Experience working with Linux, Unix, and Windows-based systems.
• Familiarity with system hardening and securing OT infrastructure.
• Strong scripting skills in Python, PowerShell, or similar languages to automate tasks and improve efficiency.

Posted By