IT/OT Technical Architect

Cognizant
London, UK
11 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Job source

Tech stack

Active Directory CompTIA Security+ Cyber Security Continuous Integration Ethernet Github Modbus Network Architecture Network Segmentation OLE for Process Control Security Information and Event Management Software Vulnerability Management
+6 more
Process Control Systems Palo Alto Networks Fortinet Industrial Software Cisco Jenkins

Job description

The role will lead OT cybersecurity, network modernization, and remediation initiatives across multiple manufacturing sites globally. The candidate will be responsible for architecture governance, cybersecurity assessments, remediation planning, stakeholder management, and successful delivery of OT transformation programs., * Lead OT cybersecurity and network transformation projects across manufacturing and industrial environments.

  • Develop and govern OT High-Level and Low-Level Designs (HLD/LLD) aligned to ISA-95, Purdue Model, and IEC 62443 standards.
  • Conduct OT cybersecurity risk assessments, threat modelling, gap assessments, and remediation planning.
  • Drive network segmentation and micro-segmentation initiatives, including firewall policy design and governance.
  • Lead vulnerability management, system hardening, patch governance, and OT security compliance activities.
  • Collaborate with site engineering teams, OEMs, infrastructure vendors, application vendors, and cybersecurity partners.
  • Present technical solutions, risks, remediation plans, and architecture recommendations to senior stakeholders and governance boards.
  • Support OT service management, incident response readiness, asset visibility, and continuous improvement initiatives.

Requirements

  • Strong experience in OT Network Engineering, OT Cybersecurity, or Industrial Systems Architecture.
  • Strong knowledge of IEC 62443, ISA-95, Purdue Model, NIST 800-82, and OT cybersecurity best practices.
  • Hands-on experience in OT network architecture, zoning and conduits, micro-segmentation, firewall technologies, and secure IT/OT integration.
  • Experience with OT cybersecurity tools such as Armis, Nozomi, Cisco Cyber Vision, Palo Alto, Fortinet, SIEM platforms, or similar solutions.
  • Strong understanding of industrial control systems including Rockwell, Siemens, Honeywell, ABB, and associated industrial protocols (OPC, Modbus, EtherNet/IP, etc.).
  • Experience in vulnerability management, cybersecurity assessments, OT system hardening, Active Directory security, backup and disaster recovery solutions.
  • Proven capability in leading global, cross-functional teams and managing client, vendor, and stakeholder engagements.
  • Excellent communication, consulting, and leadership skills with experience driving large-scale remediation and transformation programs., * ISA/IEC 62443 (Fundamentals, Risk Assessment, Design, or Expert)
  • CCNP / CCIE
  • CISSP, GICSP, GIAC, or equivalent cybersecurity certifications
  • Nozomi, Palo Alto, Fortinet, or other OT security certifications

Preferred Industry Experience

  • FMCG / Manufacturing
  • OT Cybersecurity Programs
  • Industrial Automation & Controls

Critical Infrastructure

  • CI/CD: GitHub Actions, Jenkins

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