Principal Security Ops Engineer, Cloud & AI Security

Microsoft; City of Westminster; On-site; GBP 94,000 - 162,000; Full time

Job summary

Microsoft is seeking a Principal Security Engineer to lead the design, deployment, and continuous improvement of security capabilities across network, identity, infrastructure, cloud, and AI environments. You will build and operate detections, automation, and investigation workflows to strengthen security posture while enabling engineering velocity.

You will work with engineering teams to implement scalable security controls, monitor telemetry, and advance protection across AI platforms and

Qualifications

• Degree in Computer Science, Cybersecurity, Engineering, Mathematics, Statistics, or related field, or equivalent practical experience.
• Experience in security engineering, infrastructure engineering, cloud engineering, software engineering, security operations, or related technical disciplines.
• Experience building, deploying, or operating security controls, monitoring systems, detection capabilities, automation solutions, or security services.

Responsibilities

• Design, build, deploy, and operate security capabilities across network, identity, infrastructure, cloud, and AI environments.
• Implement and continuously improve monitoring, telemetry, detection, and response capabilities.
• Develop detections, analytics, automation, and investigation workflows that identify identity compromise, unauthorized access, privilege escalation, lateral movement, dubious egress activity, data exfiltration, policy violations, and anomalous workload behavior.
• Build security services, automation, tooling, APIs, data pipelines, and operational capabilities that reduce manual effort, improve security operations, and enable engineering teams to securely operate critical services.
• Secure cloud, sovereign, and AI environments by implementing security controls, validating protections, conducting threat modeling, performing security reviews, and identifying opportunities to reduce risk through engineering improvements.
• Investigate complex security events and emerging threats using telemetry, identity signals, access patterns, infrastructure activity, and operational data. Convert findings into new detections, controls, automation, and engineering solutions.
• Apply AI, machine learning, and agentic technologies to improve security monitoring, investigations, threat hunting, response, and operational efficiency. Develop monitoring and protection capabilities for AI infrastructure, model training environments, inference services, and autonomous systems.

Skills

Security engineering

Cloud security

Monitoring

Automation

Threat hunting

AI security

Security analytics

Education

Computer Science or related field

Job description

Microsoft is seeking a Principal Security Engineer to lead the design, deployment, and continuous improvement of security capabilities across network, identity, infrastructure, cloud, and AI environments. You will build and operate detections, automation, and investigation workflows to strengthen security posture while enabling engineering velocity.

You will work with engineering teams to implement scalable security controls, monitor telemetry, and advance protection across AI platforms and