Security Engineer - SIEM, KQL
26 days ago
London
Security Engineer - SIEM, KQL- sought by investment bank based in London. *Inside IR35 - 3 days a week on-site**Key Responsibilities • SIEM Management & Optimization:, • Design, implement, and maintain Microsoft Sentinel workspaces, connectors, analytics rules, and playbooks, • Develop advanced KQL queries for threat hunting and reporting, • Optimize SIEM performance, cost, and data retention policies, • Troubleshoot log ingestion and parsing issues, • Log Source Integration:, • Onboard and configure critical log sources (AD, firewalls, servers, cloud infrastructure), • Manage event collection and forwarding infrastructure, • Implement data filtering and custom log parsing, • Threat Detection & Use Case Development:, • Develop and refine detection rules based on threat intelligence and attack patterns, • Continuously improve detection efficacy and reduce false positives, • Security Monitoring & Incident Response:, • Monitor systems for anomalies and malicious activity, • Contribute to threat hunting and incident response playbooks, • Provide expert guidance on securing applications and infrastructure, • Security Advisory & Innovation:, • Support PoCs for new security tools