OT Cyber Security Architect: Secure Critical Operations

Astro Studios, Inc.; Greater London; On-site; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Private healthcare

Generous pension

Annual leave 25 days

Annual bonus

PA share ownership

Job summary

Astro Studios, Inc. is seeking an Operational Technology Cyber Security Architect to design and deliver secure OT architectures across complex environments. You will engage with senior stakeholders, engineers and regulators to translate cyber risk into deployable security outcomes.

You will lead architecture decisions, roadmaps and practical security controls while balancing resilience and operational efficiency in client projects.

Qualifications

• Strong experience designing OT security architectures in critical infrastructure and complex environments.
• Deep knowledge of ICS/OT networks and safety‑critical constraints.
• Experience with IEC 62443, NIST CSF, NCSC CAF, ISO 27001, NIS/NIS2 and related regulatory requirements.
• Ability to translate cyber risk into practical architecture decisions, designs and roadmaps.
• Excellent communication across technical and non‑technical audiences.

Responsibilities

• Architect and design secure OT environments aligned to good practice and standards.
• Translate cyber risk assessments into target‑state architectures and roadmaps.
• Define secure IT/OT integration patterns, including segmentation and monitoring.
• Lead OT security transformation, remote access, vulnerability management and resilience.
• Advise CISOs, CIOs and engineering teams on OT risk and investment priorities.

Skills

OT security

Security architecture

Stakeholder communication

Problem solving

Team collaboration

Tools

Nozomi

Claroty

Dragos

Microsoft Defender for IoT

Job description

Astro Studios, Inc. is seeking an Operational Technology Cyber Security Architect to design and deliver secure OT architectures across complex environments. You will engage with senior stakeholders, engineers and regulators to translate cyber risk into deployable security outcomes.

You will lead architecture decisions, roadmaps and practical security controls while balancing resilience and operational efficiency in client projects.