Operational Technology (OT) Cybersecurity & Infrastructure Specialist

Job description

Industry/Sector Not Applicable Specialism Cybersecurity & Privacy Management Level Senior Associate Job 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 1. IT-OT Infrastructure & Operations 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. Act as a subject matter expert (SME) in OT security and infrastructure lifecycle management. 2. OT Cybersecurity Governance & Implementation 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. Maintain measurable compliance and security posture reporting for enterprise and regulatory requirements. 3. Secure OT Migration & Deployment (Greenfield / Brownfield Projects) Lead secure OT migration initiatives for modernization or technology upgrades. Design greenfield OT environments with security integrated from concept to commissioning. Assess and retrofit brownfield environments, addressing vulnerabilities in legacy systems. Develop and execute migration roadmaps aligned with Purdue Model (Levels 0–5) for secure network segregation. Collaborate with engineering and operations teams to ensure secure deployment of new OT technologies. 4. Security Architecture & Purdue Model Segmentation Architect secure OT network topologies aligned with the Purdue Enterprise Reference Architecture (PERA). Implement network segmentation (zones and conduits) to isolate critical control systems and prevent lateral movement. Configure and deploy firewalls, VLANs, routers, and switches using Cisco, Palo Alto Networks, or equivalent solutions. Conduct network segmentation reviews to ensure compliance with IEC 62443 and enterprise policies. Develop and document zoning, conduit policies, and access controls for OT systems. 5. Wireless and IIoT Security Design and secure wireless OT communications (Wi-Fi, Bluetooth, LoRa, Zigbee, 4G/5G) used in IIoT and industrial telemetry. Implement wireless security controls such as 802.1X authentication, WPA3-Enterprise, and NAC. Perform wireless vulnerability assessments to detect rogue access points, weak encryption, or interference risks. Integrate wireless telemetry systems with enterprise SIEM and SOC platforms for unified visibility. 6. Threat, Risk, and Control Management Identify threats, vulnerabilities, and attack paths specific to industrial control systems and connected OT assets. Build security control libraries, design patterns, and reusable best practices mapped to industry standards. Evaluate and optimize existing controls and defense mechanisms to ensure a multi-layered security posture. Provide detailed configuration and deployment playbooks for consistent and secure implementation. 7. Integration, Collaboration & Continuous Improvement Collaborate with IT, OT, and engineering teams to align cybersecurity architecture with operational and business objectives. Identify and remediate security gaps in solution designs, ensuring effective risk management. Support integration of OT monitoring platforms with enterprise-level analytics and response systems. Demonstrate operational excellence and continuous improvement across all project phases and engagements. 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. Certifications (Preferred): 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) Technical Competencies: Deep expertise in ICS/SCADA, DCS, and PLC systems (e.g., Siemens, Rockwell, Schneider). Proficient in industrial protocols (Modbus, DNP3, OPC-UA, Profinet, EtherNet/IP). Experience with network segmentation and Purdue Model architecture (Levels 0–5). Skilled in OT visibility and monitoring tools: Dragos, Nozomi Networks, Claroty, Armis (for OT cybersecurity and asset discovery). SolarWinds, Zabbix, NetBrain (for network performance monitoring and topology mapping). Hands-on 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. Soft Skills: Strong analytical and problem-solving mindset. Excellent communication and stakeholder coordination skills. Ability to balance security rigor with operational uptime. Commitment to security-by-design, documentation, and continuous improvement. Understand the importance of have a correct information management Knowledge of Information Security and Data Protection Correct Information Security Management 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; or any other status protected by law. PwC is proud to be an inclusive organization and equal opportunity employer. Travel Requirements Not Specified Job Posting End Date