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Haystack

Cyber Security Analyst

Haystack
United Kingdom · Contract · Mid-Senior
We're working with a high-impact Central Government strategic partner on this exciting opportunity to protect critical national infrastructure.

Step into a mission-critical role where you will safeguard essential public services using a cutting-edge security stack including Splunk, Microsoft Defender, and Tenable. This is a high-stakes environment where your expertise in incident response and threat modelling will directly impact national security posture.

The Role

  • Lead the triage and investigation of security events across a complex estate to determine scope, priority, and impact.
  • Monitor and manage advanced security tooling including SIEM (Splunk), IDS/IPS, and vulnerability scanners to detect emerging threats.
  • Drive end-to-end incident response actions and perform deep-dive forensic analysis to identify root causes of breaches.
  • Collaborate with cross-functional teams to provide actionable recommendations for efficient remediation and long-term hardening.
  • Utilize Tenable Threat Modelling System solutions to stay ahead of sophisticated adversaries and evolving attack vectors.

What You'll Need

  • Active DV (Developed Vetting) Clearance is essential for this sensitive government project.
  • Proven experience in a SOC environment with high proficiency in SIEM platforms like Splunk and Microsoft Defender for Endpoint.
  • Strong technical grasp of network security principles, including firewalls, access control mechanisms, and protocol analysis.
  • Background in forensic analysis and vulnerability management using industry-standard tools such as Tenable.
  • Industry-recognised certifications such as CISSP, CISM, CompTIA Security+, CEH, or GIAC are highly desirable.

What's On Offer

  • Deeply impactful work within the Central Government sector focused on national security.
  • Initial 12-month contract with a strong likelihood of long-term extensions.
  • Flexible hybrid working model based out of a central London hub.
  • Exposure to enterprise-level threat hunting and high-level forensic investigations.

Apply via Haystack today!

Key Skills

Ranked by relevance

splunk microsoft defender incident response siem network security firewalls cissp cism ceh
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United Kingdom

Global English-speaking job market

Posted
Apr 11, 2026
Type
Contract
Level
Mid-Senior
Location
London
Company
Haystack

Industries

Technology Information Internet

Categories

Information Technology

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