Security Engineer in London

We're supporting a leading global organisation in the search for a Senior Security Engineer to join a highly respected Cyber Security function responsible for protecting critical business services and driving the next generation of security capabilities.

This is an opportunity to join a forward-thinking team at the forefront of security engineering, automation, and emerging technologies.

Alongside strengthening and enhancing core security capabilities, you'll play a key role in evaluating and implementing innovative solutions across areas such as AI-driven security, advanced automation, and post-quantum security initiatives.

You'll be working in a technically strong environment alongside experienced security professionals, engineers, architects, and technology leaders who are passionate about building scalable, proactive security capabilities.

• What You'll Be Doing
• Design, build, and enhance security monitoring and detection capabilities across a Microsoft-centric security environment.
• Engineer and optimise SIEM and security operations capabilities using Microsoft Sentinel.
• Develop security automation and orchestration workflows to improve response times and reduce manual effort.
• Build integrations across security tooling and infrastructure using APIs, scripting, and cloud-native technologies.
• Develop and maintain advanced threat detection use cases and monitoring controls.
• Collaborate with infrastructure, cloud, and application teams to improve security posture and resilience.
• Support threat modelling, security assessments, and proactive security initiatives.
• Evaluate emerging technologies and contribute to innovation programmes focused on AI, automation, and future security challenges.
• Participate in proof-of-concepts and strategic projects focused on the evolution of the organisation's cyber security capabilities.

What We're Looking For

• Strong experience in Security Engineering, Security Automation, Detection Engineering, or SIEM Engineering.
• Hands‑on experience with Microsoft Sentinel and the wider Microsoft Security ecosystem.
• Experience building and maintaining security monitoring, detection, and response capabilities.
• Strong scripting and automation skills using Power Shell and/or Python.
• Experience with SOAR technologies, Logic Apps, playbooks, and workflow automation.
• Good understanding of Azure security services and cloud security principles.
• Experience integrating security tools and leveraging APIs for automation.
• Knowledge of threat detection methodologies, attack techniques, and security frameworks.
• Strong communication skills with the ability to work across technical and non‑technical stakeholders.
• Experience within financial services or other highly regulated environments.
• Exposure to security innovation initiatives, AI security, or emerging technology programmes.
• Relevant Microsoft security certifications.

Why Apply?

This is more than a traditional security engineering role.

You'll have the opportunity to influence how a major organisation approaches modern cyber defence while working on projects that extend beyond day-to-day operations.

From advanced automation and AI-enabled security capabilities through to future‑facing initiatives around post-quantum security, you'll help shape the next generation of cyber security strategy and engineering.

If you're passionate about security engineering, automation, and emerging technologies, and want to work within a high‑performing team tackling complex security challenges at scale, we'd love to hear from you.