OT Security Architect

Accountabilities:

• Lead stakeholder workshops involving IT, OT, Engineering, Manufacturing, Quality, and Cybersecurity teams.


• Define OT cybersecurity strategies, architecture principles, security standards, and governance frameworks.


• Develop Security Zones and Conduits methodologies aligned with IEC 62443.


• Establish Defence-in-Depth security architectures based on the Onion Model.


• Define OT network segmentation strategies and firewall architecture standards.


• Establish secure connectivity requirements between OT environments, enterprise IT, and cloud platforms.


• Develop OT identity and access management requirements, including privileged access controls.


• Define cybersecurity requirements for OT vulnerability management and incident response.


• Ensure OT security architectures align with relevant regulations, corporate standards, and data protection requirements.


• Lead technical architecture reviews, governance forums, and documentation and sign-off processes.


• Translate complex security requirements into practical enterprise standards and reusable reference architectures.

Requirements

• 12+ years of cybersecurity experience, including at least 7 years specifically focused on OT/ICS cybersecurity.


• Proven experience working within regulated manufacturing environments.


• Strong practical knowledge and application of IEC 62443 and NIST SP 800-82.


• Deep expertise in Industrial Control Systems and manufacturing cybersecurity.


• Experience conducting OT security risk assessments and establishing cybersecurity governance.


• Strong understanding of the Purdue Model, industrial DMZ architectures, and OT network segmentation.


• Extensive knowledge of firewall security architecture within industrial environments.


• Experience defining and implementing identity and access management requirements for OT environments.


• Knowledge and practical experience with OT incident response.


• Strong ability to lead cross-functional workshops and communicate complex security concepts to both technical and business stakeholders.


• Demonstrated ability to translate cybersecurity requirements into enterprise standards, governance frameworks, and reference architectures.


• Strong consulting, communication, stakeholder management, and technical leadership skills.

• Freelance / contract engagement.


• Fully remote position.


• Europe-based opportunity.


• Expected start date: October 2026.


• Full-time allocation of 40 hours per week.


• Opportunity to lead OT cybersecurity architecture for regulated manufacturing environments.


• Exposure to complex industrial cybersecurity, enterprise governance, and international stakeholder environments.

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