Operational Technology (OT) Cybersecurity & Infrastructure Specialist

Operational Technology (OT) Cybersecurity & Infrastructure Specialist

PwC

Description & Summary

The OT Cybersecurity & Infrastructure Specialist is responsible for designing, implementing, securing, and maintaining IT‑OT infrastructures that enable safe, reliable, and efficient industrial operations. The role focuses on protecting control environments through secure‑by‑design architectures, Purdue Model segmentation, and end‑to‑end visibility using advanced OT monitoring platforms.

The ideal candidate brings deep technical knowledge across IC­S/SCADA systems, industrial networking, wireless OT systems, and cybersecurity frameworks such as SANS IC­S, IEC 62443, NIST 800‑82, and CIS Controls — with proven experience in greenfield and brownfield deployments, OT modernization, and security integration projects.

Key Responsibilities

• Design, implement, and maintain secure IT‑OT infrastructure ensuring reliability, performance, and cyber resilience.
• Provide expert technical support and resolve complex IT‑OT integration and security issues to minimize downtime.
• Maintain a comprehensive asset inventory (wired, wireless, and IIoT) for visibility and configuration management.
• Develop, implement, and enforce cybersecurity policies and standards in alignment with SANS, IEC 62443, NIST, and CIS frameworks.
• Conduct security assessments, audits, and compliance reviews across control networks and critical systems.
• Integrate IDS/IPS and SIEM solutions to monitor and detect OT‑specific cyber threats.
• Utilize OT cybersecurity monitoring tools (e.g., Dragos, Nozomi, Claroty, Armis) for continuous threat visibility and anomaly detection.
• Use network and infrastructure monitoring platforms (e.g., SolarWinds, Zabbix, NetBrain) for performance tracking, topology mapping, and proactive incident management.
• Lead secure OT migration initiatives for modernization or technology upgrades, designing greenfield OT environments with security integrated from concept to commissioning.
• Assess and retrofit brownfield environments, addressing vulnerabilities in legacy systems.
• Architect secure OT network topologies aligned with the Purdue Enterprise Reference Architecture (PERA) and implement network segmentation (zones and conduits) to isolate critical control systems.
• Configure and deploy firewalls, VLANs, routers, and switches using Cisco, Palo Alto Networks, or equivalent solutions.
• Design and secure wireless OT communications (Wi‑Fi, Bluetooth, LoRa, Zigbee, 4G/5G) and implement wireless security controls such as 802.1X authentication, WPA3‑Enterprise, and NAC.
• Identify threats, vulnerabilities, and attack paths specific to industrial control systems and build security control libraries, design patterns, and reusable best practices mapped to industry standards.
• Collaborate with IT, OT, and engineering teams to align cybersecurity architecture with operational and business objectives and remediate security gaps.
• Support integration of OT monitoring platforms with enterprise‑level analytics and response systems.

Qualifications & Skills

• Education: Bachelor’s or Master’s in Computer Science, Electrical, Electronics, or Industrial Engineering.
• Experience: 5–10 years in OT/ICS cybersecurity, network engineering, or industrial automation.
• Preferred Certifications: SANS GICSP, GRID, GIAC ICS Defender, GCIP, CISSP, CISM, CEH, CompTIA Security+/CySA+, ISA/IEC 62443 Expert/Practitioner, Cisco CCNP Security, Palo Alto PCNSE, CWSP/CWNA (for wireless OT).
• Deep expertise in IC­S/SCADA, DCS, and PLC systems (e.g., Siemens, Rockwell, Schneider).
• Proficiency in industrial protocols (Modbus, DNP3, OPC‑UA, Profinet, EtherNet/IP) and network segmentation with Purdue Model architecture.
• Skilled in OT visibility and monitoring tools: Dragos, Nozomi Networks, Claroty, Armis, SolarWinds, Zabbix, NetBrain.
• Experience with firewalls, IDS/IPS, SIEM, NAC, and VPNs in OT/industrial environments.
• Knowledge of wireless OT security, IIoT device hardening, and cloud‑connected OT visibility.
• Familiar with risk management, threat modeling, and incident response for OT systems.
• Strong analytical and problem‑solving mindset; excellent communication and stakeholder coordination skills.
• Commitment to security‑by‑design, documentation, and continuous improvement.

Travel Requirements

Not specified.

Equal Opportunity Statement

All qualified applicants will receive consideration for employment at PwC without regard to ethnicity, creed, color, religion, national origin, age, disability, neurodiversity, sexual orientation, gender identity or expression, marital status, or any other status protected by law. PwC is proud to be an inclusive organization and equal‑opportunity employer.

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