Security Engineer SIEM / QRadar 6-month contract London/remote OverviewMy Client is seeking a hands-on Security Engineer to own and optimise SIEM rules, alert tuning and log aggregation, primarily within IBM QRadar. The role will focus on improving threat detection and ensuring high-quality security logs are available to a third-party SOC. There may also be an opportunity to support a future migration to Splunk.Key Responsibilities of the Security Engineer Own, maintain and tune IBM QRadar SIEM rules, correlation logic and alerts.Review and optimise detection use cases to improve threat visibility and reduce false positives.Configure and maintain log collection, parsing, normalisation and aggregation.Support log aggregation using Fluentd, Cribl or similar technologies.Ensure relevant security logs are accurately ingested and available to the third-party SOC.Troubleshoot log ingestion, parsing and SIEM detection issues.Identify opportunities to improve SIEM coverage, logging quality and detection capabilities.Support planning and potential migration from QRadar to Splunk. Essential Skills and Experience from the Security Engineer Strong hands-on experience with IBM QRadar SIEM.Experience developing, maintaining and tuning SIEM rules and correlation searches.Good understanding of security logging, log sources and event normalisation.Experience with log aggregation and forwarding technologies.Experience working with SOC teams and supporting security monitoring operations. ..... full job details .....