Senior CIRT Analyst

We are seeking a Senior CIRT Analyst to join our Cyber Defence team in London, UK. The role requires a detail-oriented, critical thinker with a strong grasp of cyber security and attacker tactics, techniques, and procedures (TTPs).

Requirements

• Coordinate and triage response to cybersecurity events and conduct forensic analysis across endpoints, networks, cloud, and SaaS.
• Integrate threat intelligence into investigations (e.g., enrich IOCs, map activity to MITRE ATT&CK, identify likely threat actors/TTPs, and assess potential impact).
• Understand the threat landscape through collaboration with industry peers, FS-ISAC, trust groups, and commercial/open-source intelligence, translating insights into actionable recommendations.
• Develop, maintain, and operationalize Incident Response playbooks and SOPs; include PIRs (Priority Intelligence Requirements), collection plans, and feedback loops to refine detections.
• Work closely with the SOC to investigate incidents and deliver containment, remediation, and root cause analysis; produce high-quality intel-informed incident reports.
• Create and tune detections (e.g., SIEM/SOAR, EDR) using intelligence signals (TTPs, behaviors, YARA/Sigma where applicable).
• Produce and present consumable intelligence outputs (e.g., flash alerts, threat overviews, executive briefs) tailored to technical and non-technical stakeholders.
• Contribute to vulnerability/threat surfacing (e.g., emerging CVEs, exploit trends) and advise on risk-based prioritization.
• Deliver actionable incident and hunting metrics to management; assess detection coverage and recommend improvements.
• Follow the end-to-end incident response lifecycle and support post-incident lessons learned with intelligence-driven enhancements.
• Build an understanding of key S&P technology, systems, and business practices to contextualize threats and drive pragmatic defenses.
• Participate in information-sharing activities (e.g., FS-ISAC submissions) in line with TLP and legal/compliance requirements.

Benefits

• Health & Wellness
• Flexible Downtime
• Continuous Learning
• Invest in Your Future
• Family Friendly Perks
• Beyond the Basics