Lead Detection & Security Engineering Specialist | Leading Global Investment Group in City of London

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Job Description
[Up to c. £350k Comp Package (or equivalent) | Hybrid Working]
Role Overview
We’re supporting a fast-scaling, technology-driven investment firm as it builds out its core security capability from first principles. This hire will take a central role in defining and delivering a modern, detection-first security programme across infrastructure, endpoints and cloud environments. Working directly alongside the CISO, you will architect and implement the firm’s detection and response foundations - designing telemetry strategy, response workflows and supporting security controls in a largely greenfield environment. This is not a SOC management role and not a prevention-heavy policy function. The philosophy is pragmatic and detection-led: assume breach, instrument intelligently, and build high-fidelity visibility. You will be expected to operate independently, shape architectural direction, and over time help grow the function from a single senior engineer into a small, high-calibre team...
Key Responsibilities
Architect and scale the firm’s end-to-end detection and response capability, from telemetry ingestion through to investigation workflows Design high-signal detection logic informed by real attack techniques, not generic vendor rules Build and refine detection pipelines, including data transformation and enrichment logic Implement deception mechanisms, behavioural detections and adversary-informed monitoring strategies Operate confidently at the systems layer, pivoting into Windows or Linux internals when required to validate hypotheses or build deeper detections Lead incident investigations, performing root-cause analysis and implementing structural remediation Contribute to and trust architecture, including certificate services and authentication models where relevant Integrate detection and security controls into engineering and infrastructure workflows Define practical standards that support a permissive, engineering-aligned security model rather than heavy-handed prevention Identify systemic blind spots and continuously improve monitoring depth and coverage Lay the groundwork for future team expansion, with the opportunity to mentor and scale the function over time
What You’ll Bring…
6-12 years’ experience minimum (8+ ) in detection engineering, security engineering or advanced incident response within complex technical environments Strong depth in Windows and/or Linux internals, with the ability to reason at the OS and systems layer Experience building detections end-to-end - not just tuning alerts within a pre-built system Preference for candidates with a red team, exploit development, or adversary-simulation background, or those who deeply understand attack mechanics Practical experience working with telemetry pipelines, SIEM platforms, or custom detection tooling Comfort with automation and lightweight coding to transform and enrich data (string and structure transformation, pipeline logic, scripting) Background in systems engineering, infrastructure, or low-level software environments Strong independent problem-solving ability - someone who can propose architecture and execute without heavy oversight Clear communication skills and confidence engaging directly with senior stakeholders Desire and ability to grow into a leadership/mentorship capacity as the function scales
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Location:
City Of London
Job Type:
FullTime
Category:
Investment, Engineering,, Specialist, Security, Lead, Engineering

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