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 … 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 Hands-on experience with Microsoft Sentinel and KQL Strong knowledge of Active Directory, Windows/Linux systems, and cloud platforms (Azure, AWS, GCP) Proficiency in More ❯
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 … 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 Hands-on experience with Microsoft Sentinel and KQL Strong knowledge of Active Directory, Windows/Linux systems, and cloud platforms (Azure, AWS, GCP) Proficiency in 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 development and … additional monitoring. Workbook creation for data visualisation. Attendance at Service Review Meetings. Maintenance of Service Documentation such as LLD (co-management activity). Skills required: Hands-on MXDR/SIEM experience (e.g., Sentinel, Splunk, QRadar) Strong telemetry parsing/enrichment skills Solid grasp of MITRE ATT&CK & threat-detection best practices Clear communicator with a customer-focused mindset Passion More ❯
City of London, London, Walbrook, United Kingdom Hybrid / WFH Options
Langley James IT Recruitment
Cyber Security Engineer required by a London financial brokerage ( near Bank station ), paying up to £85k + bonus + benefits. Hybrid role (3 days office-based). Join a focused 3-person IT Security team, reporting to the IT Security Officer, to implement and maintain robust security across their infrastructure. Key responsibilities include managing WAF/DDoS, security gateways … SIEM/SOAR/EDR, firewalls, MFA/SSO, MDM/MAM, vulnerability scans, and incident response. Key Responsibilities: Manage WAF/DDoS, web/email security gateways, SIEM/SOAR/EDR (alert response), firewalls, MFA/SSO, MDM/MAM, vulnerability scans/remediation, security certificates, IDS/IPS, PAM, and deliver security awareness training. Remediate More ❯
City of London, London, Walbrook, United Kingdom Hybrid / WFH Options
Langley James IT Recruitment
Cyber Security Engineer required by a London financial brokerage ( near Bank station ), paying up to £75k + bonus + benefits. Hybrid role (3 days office-based). Join a focused 3-person IT Security team, reporting to the IT Security Officer, to implement and maintain robust security across their infrastructure. Key responsibilities include managing WAF/DDoS, security gateways … SIEM/SOAR/EDR, firewalls, MFA/SSO, MDM/MAM, vulnerability scans, and incident response. Key Responsibilities: Manage WAF/DDoS, web/email security gateways, SIEM/SOAR/EDR (alert response), firewalls, MFA/SSO, MDM/MAM, vulnerability scans/remediation, security certificates, IDS/IPS, PAM, and deliver security awareness training. Remediate More ❯
City of London, London, Walbrook, United Kingdom Hybrid / WFH Options
Langley James IT Recruitment
Cyber Security Engineer required by a London financial brokerage ( near Bank station ), paying up to £75k + bonus + benefits. Hybrid role (3 days office-based). Join a focused 3-person IT Security team, reporting to the IT Security Officer, to implement and maintain robust security across their infrastructure. Key responsibilities include managing WAF/DDoS, security gateways … SIEM/SOAR/EDR, firewalls, MFA/SSO, MDM/MAM, vulnerability scans, and incident response. Key Responsibilities: Manage WAF/DDoS, web/email security gateways, SIEM/SOAR/EDR (alert response), firewalls, MFA/SSO, MDM/MAM, vulnerability scans/remediation, security certificates, IDS/IPS, PAM, and deliver security awareness training. Remediate More ❯