Overview
This range is provided by Harvey Nash. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.
Base pay range
Direct message the job poster from Harvey Nash
Role: Senior Information Security Architect
Location: London - Fully remote – 1 day a month in the office
Need to be open to travel worldwide
As a Senior Information Security Architect, you will define and implement security architecture across both Operational Technology (OT) and Cloud (Azure) environments. You’ll work closely with cross-functional teams to embed security in all architecture decisions, ensuring operational efficiency, compliance, and business enablement.
You will also represent security in the Change Control Board (CCB), reviewing significant changes and advising on risk mitigation strategies.
Responsibilities
* OT Security Architecture — Design secure architectures for ICS, SCADA, IIoT systems; implement segmentation and remote access controls (IEC 62443, NIST 800-82); evaluate OT security tools (e.g., Armis, Nozomi, Microsoft Defender for IoT); recommend controls for legacy systems and work closely with plant IT/engineers.
* Cloud Security (Azure) — Define security architecture in Azure using Microsoft CAF and Zero Trust; implement monitoring and incident response using Sentinel, Defender for Cloud; ensure compliance with ISO 27001, NIST CSF, CIS Benchmarks.
* Governance & Change Management — Advise on security in CCB reviews for IT/OT/cloud changes; align change processes with regulatory and security requirements; recommend tools across IT, OT, and cloud security; stay current on evolving threats and industry best practices; work with vendors and consultants to enhance security posture.
* Represent security in Change Control Board (CCB) reviews and contribute to risk mitigation strategies.
Skills & Experience
* Strong OT/ICS/SCADA cybersecurity expertise, including industrial protocols.
* Deep knowledge of Azure security (Defender, Sentinel, Key Vault, IAM).
* Familiarity with Zero Trust Architecture and SASE.
* Experience with IEC 62443, NIST 800-82, ISO 27001, NIST CSF, CIS.
* Strong communicator with experience engaging CCBs and senior stakeholders.
Seniority
* Mid-Senior level
Employment type
* Full-time
Job function
* Information Technology
Industries
* Staffing and Recruiting
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