2 of 2 Contract Senior Security Engineer Jobs

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 … 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 Help define and measure control effectiveness Required Skills & Experience Certifications: AZ-500, SC-200, SC-900, CompTIA Security+, CISSP, GCIA, GCIH, GCFA, CCSP Experience with SOAR playbooks, YARA rules, STIX, and YAML Participation in red/purple team exercises. 3+ years in a Security Engineer, SOC Analyst, or similar role More ❯

Senior MXDR Security Engineer sought by leading investment bank based in the city of London. *Inside IR35 - 3 days a week on site* What You'll Do: Development of use cases and rulesets across multiple log sources. Performing regular rule refinement sessions to address rule logic issues and false positives. Output activities from refinement sessions such as … refinement. MITRE ATT&CK heat map coverage. Working with internal ITC teams and the Customer to identify any onboarding or offboarding projects of appropriate log sources necessary for effective security monitoring. Identification of opportunities for additional monitoring. Workbook creation for data visualisation. Attendance at Service Review Meetings. Maintenance of Service Documentation such as LLD (co-management activity). Skills More ❯