Senior Security Engineer

Role OverviewWe’re looking for a Security Engineer to support the operation, optimisation, and continuous improvement of enterprise security platforms across a complex client environment. You’ll work closely with SOC analysts, engineers, and client teams to ensure tooling is effective, resilient, and aligned to evolving threats. Key Responsibilities • Maintain and optimise security platforms including SIEM (Microsoft Sentinel), Defender stack, vulnerability management, DLP, and cloud security tools • Ensure platforms are integrated, performing effectively, and aligned to client requirements • Support incident response by resolving platform issues, enabling telemetry, and making technical changes where required • Deploy and tune detection rules, improving alert quality and reducing false positives • Support automation initiatives (e.g. SOAR, LogicApps) to drive operational efficiency • Collaborate with SOC providers and internal teams on platform performance, log ingestion, and ongoing improvements • Maintain clear documentation and operate within change control and compliance frameworks Skills & Experience • Strong hands-on experience with Microsoft Sentinel, Defender, and security tooling in a SOC or managed services environment • Experience across SIEM, EDR/XDR, vulnerability scanning, and cloud security • Knowledge of detection engineering, log pipelines, and threat frameworks (e.g. MITRE ATT&CK) • Scripting/automation skills (PowerShell, Python, or similar) • Solid understanding of networking, Azure, and security architecture • Experience working in regulated environments is advantageous Personal Attributes • Analytical problem solver with strong technical depth • Collaborative and able to work across technical and non-technical teams • Proactive, detail-oriented, and accountable for platform health • Strong communicator with a client-focused mindset Additional Requirements • Eligible for UK security clearance (SC/NPPV) • Relevant certifications (e.g. AZ-500, SC-200, Security+) desirable