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IT/OT Technical Architect

00070285311

IT/OT Technical Architect

Location: London, UK
Employment Type: Full-time
Work Model: Hybrid

About the Role

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.

Key Responsibilities

  • 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.

Required Qualifications

  • 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.

Preferred Qualifications

  • 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

Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.

Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.

Applicants for US based positions must be currently authorized to work for any employer in the United States. The company is unable to provide employment-based immigration sponsorship for US based positions.

If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.

About Cognizant: 
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.

Benefits that help you thrive and grow

Our benefits program is built with you in mind—so you can enjoy a fulfilling, balanced and healthy life.

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Financial wellbeing

We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.

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Physical and mental health

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more. 

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Your career, your way

With 350,000+ roles at Cognizant, you’ll have opportunities explore new technologies, industries and locations—and build the skills you need to grow your career.

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Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

Your path to Cognizant

Here’s what you can expect from our hiring process. Please keep in mind that it may vary by role and location. Explore our FAQs to learn more.

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Step 1: Apply to the right opportunity

Find an open role that matches your skills and career goals and show us why you’re the person for the job. Don’t see the right opportunity? Consider joining our Talent Community.

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Step 2: Connect with your recruiter

If one of our recruiters sees a fit, they’ll set up a short intro call to learn more about you and how your experiences and skills match the role.

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Step 3: Show off your skills

If you and our team would like to continue the process, you’ll interview with our hiring team. Some roles may also require technical assessments and/or client interviews.

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Step 4: Decision time

Our team will then review each candidates’ potential to succeed in the role. This step may take some time because we want to find the right fit for both you and us—but you can count on us to keep you updated.

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