Cyber Security Architect, Engineering Lead, Zero Trust, Microsoft Sentinel, London, COR7700

Corriculo Ltd; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Corriculo Ltd is seeking a Cyber Security Architect to own the protective design across the technology estate for a London-based professional services firm. You will lead architecture reviews, run threat modelling sessions for major programmes, and provide senior technical oversight across detection engineering, monitoring, and incident response.

A core focus will be guiding responsible AI adoption, designing controls for AI agents and platforms such as Microsoft Sentinel and Microsoft 365

Qualifications

• Experience designing protective controls in a Microsoft-centric environment (M365/Entra ID/Defender XDR/Azure/Purview).
• Strong grasp of Zero Trust, cloud/identity architecture, endpoint protection, and application-layer concerns.
• Lead architecture reviews and threat modelling engagements, producing reference architectures and technical standards for complex environments.
• Hands-on capability across incident response, detection engineering, exposure management, and automating assurance workflows.
• Familiarity with ISO 27001, Cyber Essentials Plus, and NIST CSF.

Responsibilities

• Own the protective design across the full technology estate and translate business priorities into practical controls and standards.
• Lead architecture reviews and threat modelling for major programmes and high-risk integrations.
• Provide senior technical oversight across detection engineering, monitoring, and incident response.
• Help the organisation adopt AI tools responsibly by designing appropriate AI governance controls and platforms such as Microsoft 365 Copilot and Microsoft Sentinel.

Skills

Threat modelling

Architecture reviews

Leadership of architecture engagements

Incident response

Zero Trust

Cloud/identity architecture

Automation of assurance workflows

ISO 27001/Cyber Essentials/NIST CSF

Tools

Microsoft 365

Entra ID

Defender XDR

Azure

Purview

Job description

Cyber Security Architect, Engineering Lead, Zero Trust, Microsoft Sentinel, AI Governance, London, COR7700

A Cyber Security Architect opportunity has opened up with a well-regarded professional services firm, offering the chance to shape how security is designed and delivered across identity, cloud, data, and emerging technologies. Could this be the role where your architecture expertise makes a genuine, lasting impact?

The Role

The Cyber Security Architect will take ownership of the full technology estate's protective design, turning business priorities and risk appetite into practical controls, measurable outcomes, and clear technical standards. Day-to-day, this involves leading architecture reviews, running threat modelling sessions for major programmes and high-risk integrations, and providing senior technical oversight across detection engineering, monitoring, and incident response.

A significant element of this role centres on helping the organisation adopt AI tools responsibly, designing appropriate controls for AI agents, bespoke AI applications, and related platforms such as Microsoft 365 Copilot.

The Company

This is a well-established, London based professional services organisation with a strong reputation in its sector. The firm operates at scale, serving a broad client base with high expectations around confidentiality, regulatory compliance, and technical rigour. The Information Security function is mature and growing, with leadership that values practical depth and demonstrable outcomes over process for its own sake.

What experience does the Cyber Security Architect need?

• A background designing and implementing protective controls within a Microsoft-centric environment, covering areas such as Microsoft 365, Entra ID, Defender XDR, Azure, and Purview,
• A strong grasp of Zero Trust principles, cloud and identity architecture, endpoint protection, and application-layer concerns.
• Demonstrated ability to lead architecture reviews and threat modelling engagements, producing reference architectures, control frameworks, and technical standards for complex or regulated environments.
• Hands-on capability across incident response, detection engineering, exposure management, and automating assurance workflows
• Familiarity with recognised frameworks including ISO 27001, Cyber Essentials Plus, and NIST CSF