The Principal Microsoft Defender XDR, IRM & Deception Engineer, working within the Global Information and Cyber Security Defence (ICSD) function, is the technical leader for enterprise cyber deception and unified detection and response across the Microsoft security ecosystem. The role focuses on building, operating, and continuously evolving an enterprise-grade Insider Risk Management (IRM) and deception programme - including honeypots, honeytokens, decoy users, decoy devices, deceptive credentials, and breadcrumbs - fully integrated with Microsoft Defender XDR (Defender for Endpoint, Defender for Identity, Defender for Office 365, and Defender for Cloud Apps), Microsoft Sentinel, and Microsoft Security Copilot.
The role exists to detect adversaries earlier in the kill chain by deceiving attackers into engaging with high-fidelity traps, while delivering unified detection, automated investigation, and response across endpoint, identity, email, and cloud workloads. It combines deep deception engineering expertise with hands-on Defender XDR mastery and the use of Agentic AI to drive proactive, intelligence-led, and largely autonomous security operations.
Deception Engineering Leadership
Own and lead the enterprise cyber deception programme end-to-end, including strategy, architecture, deployment, operations, and continuous improvement.
Design, deploy, and operate a layered deception fabric across on-premises, hybrid, and multi-cloud environments using honeypots, honeytokens, decoy accounts, decoy devices, deceptive files / shares, and breadcrumbs.
Act as the technical authority for deception engineering and Microsoft Defender XDR across the enterprise.
Microsoft Defender XDR Leadership
Lead the design, implementation, and optimisation of Microsoft Defender XDR across endpoint, identity, email, and cloud-app workloads.
Integrate all deception signals (honeypot, honeytoken, decoy, breadcrumb) into Defender XDR and Microsoft Sentinel as first-class, high-fidelity detections.
Define and enforce a unified detection and response strategy across the Microsoft security stack.
Data Protection, DLP & Insider Risk Management
Lead the design and implementation of Microsoft Purview Data Loss Prevention (DLP) policies across endpoints, cloud apps, and collaboration platforms
Define and enforce data protection controls to prevent unauthorised data exfiltration and misuse
Leverage Microsoft Insider Risk Management (IRM) to detect risky user behaviour, including data leaks, policy violations, and insider threats
Correlate DLP, IRM, and identity signals with Microsoft Defender XDR to provide unified incident context
Collaborate with Risk, Compliance, and Legal teams to align DLP and insider risk controls with regulatory and business requirements
Continuously optimise detection use cases combining identity, data, and behavioural analytics
Multi-Cloud Deception & Detection (AWS, GCP, OCI)
Extend the deception programme and Defender-style detection capabilities consistently across AWS, GCP, and OCI, including:
Cloud honeypots, decoy IAM roles, and honeytoken cloud credentials / API keys
Control-plane, workload, container, and Kubernetes threat detection
Cross-cloud identity and access misuse detection
Ensure consistent detection, deception, and response coverage across hybrid and multi-cloud environments.
Automation, Agentic AI & Continuous Improvement
Contribute towards automation of deception deployment, detection, investigation, and response workflows using Microsoft Sentinel SOAR, Logic Apps, and Microsoft Security Copilot.
Define KPIs and metrics covering deception engagement, detection coverage, and response maturity.
Continuously improve detection, hunting, and deception capabilities to align with emerging threats and adversary tradecraft.
Stakeholder Engagement & Technical Leadership
Lead and grow a team of Defender XDR and Deception Engineers, setting technical direction, standards, and delivery priorities.
Partner with SOC, CTI, Identity, Cloud, and Engineering teams to embed deception and Defender XDR detection into all enterprise platforms.
Provide mentorship and leadership to deception engineers, detection engineers, threat hunters, and SOC analysts.
Communicate deception strategy, detection coverage, residual risk, and security improvements to senior stakeholders.
Enjoy a benefits package designed to help you thrive, both professionally and personally. You'll receive 25 days of annual leave plus an extra WTW day to relax and recharge. Our comprehensive health and wellbeing offering includes private healthcare, life insurance, group income protection, and regular health assessments, all giving you peace of mind. Secure your future with our defined contribution pension scheme, featuring matched contributions up to 10% from the company.
We support your growth and balance with hybrid working options, access to an employee assistance programme, and a fully paid volunteer day to make a difference in your community. On top of these, you can opt into a variety of additional perks including an electric vehicle car scheme, share scheme, cycle-to-work programme, dental and optical cover, critical illness protection, and much more. Start making the most of your career and wellbeing with a range of benefits tailored for you.
Equal Opportunity Employer
We're committed to equal employment opportunity and provide application, interview and workplace adjustments and accommodations to all applicants.
Neutral 2–4 sentence summary of what working at this company is like, drawn from public reviews and press coverage. Tone, collaboration style, pace, benefits highlights.
£45,000 – £60,000 (Glassdoor, Levels.fyi, 2025)
