Principal Microsoft Cloud & AI Security Architect

WTW•Reigate, TX

20h

About The Position

The Role Architect and implement next generation Microsoft cloud security across Azure and multi cloud environments. Drive adoption of Agentic AI for Security to enable autonomous detection, adaptive response, and continuous security posture improvement. Enhance Microsoft Sentinel with MCP (Model Context Protocol), Sentinel Data Lake, and Sentinel Graph capabilities for advanced analytics, threat correlation, and automated workflows. Optimise and operationalise Defender XDR, Defender for Cloud, and Wiz to enhance cloud posture, workload protection, and risk visibility. Strengthen identity protection through Entra ID, Conditional Access, MFA, PIM/JIT, and Defender for Identity. Lead the automation of security operations using Sentinel Playbooks, Logic Apps, Power Automate, and advanced SOAR workflows. Drive proactive threat detection, email threat defence, and automated containment using MDO and Darktrace Email. Partner closely with GSOC, Incident Response, Threat Hunting, TI and Cloud Engineering teams to deliver unified detection, response, and governance. Manage, mentor and strengthen a team of Cyber Defence Security Engineers.

Requirements

Deep hands‑on expertise in Microsoft Sentinel, including architecture, SIEM/UEBA, KQL, custom detections, automation, Sentinel Data Lake, MCP, Sentinel Graph, and Agentic AI–driven security.
Strong experience with Wiz (Wiz Defend, Runtime Sensor, Wiz Code) and solid understanding of CSPM/CWPP for cloud posture and workload protection.
Proven ability to integrate and automate security workflows using Sentinel Graph, Microsoft Graph Security API, Playbooks, Logic Apps, Power Automate, and KQL‑based automation.
Advanced identity security skills across Entra ID, Conditional Access, MFA, Identity Protection, Privileged Identity Management (PIM), Just‑in‑Time (JIT) access, and Zero Trust identity models.
Strong background in email security, including Microsoft Defender for Office 365, Darktrace Email, anti‑phishing controls, Safe Links/Safe Attachments, phishing simulations, and email threat intelligence.
Ability to produce clear, well‑structured security architecture documentation, runbooks, and incident response procedures.

Nice To Haves

Deep expertise in Microsoft Sentinel architecture, tuning, SIEM/UEBA, KQL, custom detections and threat hunting.
Strong hands-on experience with: Agentic AI for Security Sentinel Data Lake (pipelines, analytics, cost optimisation, AI enablement) Microsoft Sentinel MCP for enriched context-aware analytics Microsoft Sentinel Graph for automated incident correlation and graph-driven workflows
Expertise designing security architectures across Azure, with additional exposure to AWS, GCP, OCI or hybrid environments.
Strong experience with Defender XDR, Defender for Cloud, CSPM, CWPP, and multi-cloud security controls.
Hands-on experience with: Wiz Cloud, Wiz Defend, Wiz Runtime Sensor, Wiz Code
Strong ability to operationalise CSPM/CWP findings into actionable remediation.
Deep understanding of Entra ID security, Conditional Access, MFA, Identity Protection, PIM/JIT.
Ability to define identity strategies and detect/mitigate identity‑led attacks.
Expertise with Microsoft Defender for Office 365, phishing protection, Safe Links/Attachments, automated email response, and Darktrace Email.
Strong experience developing SOAR workflows and automation pipelines using: Sentinel Playbooks, Azure Logic Apps, Power Automate, Graph Security API, KQL-based automation
Ability to document architectures, runbooks, and processes clearly and accurately.
Working knowledge of NIST CSF, ISO 27001, CIS Benchmarks, GDPR and SOC2.
Ability to embed governance in cloud and SOC engineering processes.
Experience guiding and developing engineering teams.
Strong communication, stakeholder management, and ability to influence global cyber defence functions.

Responsibilities

Architect and implement next generation Microsoft cloud security across Azure and multi cloud environments.
Drive adoption of Agentic AI for Security to enable autonomous detection, adaptive response, and continuous security posture improvement.
Enhance Microsoft Sentinel with MCP (Model Context Protocol), Sentinel Data Lake, and Sentinel Graph capabilities for advanced analytics, threat correlation, and automated workflows.
Optimise and operationalise Defender XDR, Defender for Cloud, and Wiz to enhance cloud posture, workload protection, and risk visibility.
Strengthen identity protection through Entra ID, Conditional Access, MFA, PIM/JIT, and Defender for Identity.
Lead the automation of security operations using Sentinel Playbooks, Logic Apps, Power Automate, and advanced SOAR workflows.
Drive proactive threat detection, email threat defence, and automated containment using MDO and Darktrace Email.
Partner closely with GSOC, Incident Response, Threat Hunting, TI and Cloud Engineering teams to deliver unified detection, response, and governance.
Manage, mentor and strengthen a team of Cyber Defence Security Engineers.

Benefits

Mental health/emotional wellbeing (including Employee Assistance Program)
medical (including prescription drug coverage and fertility benefits)
dental
vision
Health Savings Account
Commuter Accounts
Health Care and Dependent Care Flexible Spending Accounts
company-paid life insurance
supplemental life insurance
AD&D
group accident
group critical illness
group legal
identity theft protection
wellbeing program
adoption assistance
surrogacy assistance
auto/home insurance
pet insurance
other work/life resources
Paid Holidays
Annual Paid Time Off (includes state/local paid leave where required)
Short-Term Disability
Long-Term Disability
Other Leaves (e.g., Bereavement, FMLA, ADA, Jury Duty, Military Leave, and Parental and Adoption Leave)
Paid Time Off (only included for Washington roles)
Qualified contributory pension plan (if eligible)
401(k) plan with annual nonelective company contribution.
Non-qualified retirement plans available to senior level colleagues who satisfy the plans’ eligibility requirements.