Senior Cyber Security Engineer (EDR) Senior Security Engineer – Monitoring & Detection

In this role you will design and improve security monitoring across cloud environments to protect critical public sector services. You will work with a multi-disciplinary team to develop robust detection capabilities, optimise SOC operations, and enhance visibility for faster threat response. The role blends hands-on detection engineering with stakeholder collaboration and guidance for the wider security function. You will be instrumental in shaping secure, resilient digital services at scale.

• Develop, tune, and maintain detection rules across SIEM, EDR, and threat detection platforms
• Create and optimise detection logic using Splunk and endpoint security solutions
• Map detections to the MITRE ATT&CK framework for comprehensive coverage
• Improve detection quality by analysing alerts, reducing false positives, and boosting operational effectiveness
• Validate detections through testing, simulations, and red-team exercises
• Manage and optimise log ingestion pipelines with routing, filtering, enrichment, and normalisation
• Enhance data efficiency via deduplication and data reduction; support cloud-native data streaming/storage
• Ensure security data aligns with standards (OCSF) with strong encryption and access controls
• Translate technical risks into business-focused recommendations
• Collaborate with stakeholders to improve security outcomes and mentor junior engineers

• Hands-on experience in Security Operations, Detection Engineering, Threat Detection, or Security Monitoring
• Experience securing cloud environments (AWS, Azure, or GCP)
• Expertise in Splunk and SPL; YARA rule development; EDR detection engineering; SIEM content development and tuning
• Experience mapping detections to MITRE ATT&CK
• Understanding of Zero Trust, identity-first security, secrets management, and network segmentation

• Stakeholder engagement
• Mentoring or leadership of engineers
• Clear communication of technical risk to non-technical audiences
• Splunk and SPL
• YARA rule development
• EDR detection engineering