Senior Detection Engineer (Consultancy)

Senior Detection Engineer (Consultancy) - Remote (Southern England)

Location: Home-based across the South - client site roughly once a fortnight Salary: £70,000 + £5,000 car allowance + £15,000 bonus (£90,000 total package)

Detection engineering, done properly

This isn't a deployment role and it isn't a monitoring role. You'll spend your time on the thing most detection engineers never get enough of: designing, writing and tuning the detection logic itself.

You'll work across customer environments as part of an established Professional Services team, alongside the SOC Engineering function. Because this is a managed security service provider, you'll see more estates, more log sources and more genuinely different problems in a year than most in-house roles offer in five.

The split is roughly 80/20 - the large majority of your week is hands-on detection and automation work, with the remainder client-facing: workshops, coverage assessments and walking customers through what you've built.

Home-based, with client site visits roughly every couple of weeks. No on-call rota. No clearance requirement.

What you'll be doing

• Designing and building detection rulesets across SIEM and XDR platforms
• Writing and tuning detection logic in KQL, cutting false positives without losing coverage
• Mapping customer log sources against use cases to identify and close coverage gaps
• Designing use cases aligned to MITRE ATT&CK
• Building SOAR automations and automated response workflows
• Writing incident response playbooks for customers
• Owning the detection-as-code approach - pipelines, version control, deployment
• Running workshops, coverage assessments and use case catalogues as customer deliverables

What we're looking for

• Hands-on SIEM engineering experience, ideally Microsoft Sentinel
• Confident KQL - this is the core of the role
• SOAR playbook design in Azure Logic Apps, Cortex XSOAR or similar
• Scripting in Python or PowerShell, and comfort working with APIs
• Use case design against MITRE ATT&CK
• Working knowledge of XDR/EDR platforms and Azure telemetry sources
• Some exposure to NDR tooling such as Vectra AI or Corelight is a bonus

Consultancy or customer-facing experience is valuable, but if you've built strong detection engineering skills in an in-house SOC and want to move into a client-facing role, we'd still like to hear from you.

What's on offer

• £70,000 base, £5,000 car allowance and a £15,000 bonus
• Home-based across Southern England, with client visits around once a fortnight
• No on-call, no shift rota
• No security clearance required
• Roughly 80% hands-on engineering, 20% client-facing
• Technical ownership of the detection-as-code practice
• Certification and training support with a clear progression path
• Exposure to enterprise security estates across multiple industries

How to apply

Apply through Reed with an up-to-date CV, or get in touch for a confidential conversation.

Fazer Recruitment is acting as an employment agency in relation to this vacancy.