Security Engineer£80-£90,0002 days a week on site - SurreyWe are seeking an experienced Security Engineer with strong Threat Modelling and Detection Engineering capabilities to support a large-scale application environment. This role will focus on designing and implementing threat models across a diverse portfolio of 90–100 applications, enhancing detection capabilities, and strengthening the organisation’s security posture.You will work closely with the Information Security team to analyse application logs, build detection logic, and implement automated alerting and response workflows using Microsoft Azure security technologies.This is an excellent opportunity for a hands-on security professional who enjoys combining threat modelling, detection engineering, and Azure security tooling in a highly impactful role.Key ResponsibilitiesDesign and implement threat models across a large and diverse application estateAnalyse application logs using Azure Log Analytics and Microsoft Sentinel to identify anomalies and potential threatsDevelop and maintain KQL queries to extract and correlate security-relevant dataBuild automated detection, alerting, and reporting workflows using Azure Logic Apps and Microsoft SentinelCollaborate with the Information Security team to deliver actionable security insights and escalate incidentsContinuously refine detection models based on evolving threats and application risk profilesProduce technical documentation and knowledge transfer to internal stakeholdersStay current with emerging threats, Azure security capabilities, and best practices in detection engineering and threat modellingRequired Skills & ExperienceProven experience in Threat Modelling within complex application environmentsStrong hands-on experience with Microsoft SentinelExperience working with Azure Log Analytics and log ingestion pipelinesProficiency in Kusto Query Language (KQL)Experience building automated workflows using Azure Logic AppsSolid understanding of:Application security principlesCommon threat categoriesAttack vectors and detection strategiesAbility to work independently and collaboratively across teamsStrong communication skills with the ability to present technical findings clearlyDesirable ExperienceDetection engineering or SOC engineering backgroundExperience with large-scale enterprise application environmentsKnowledge of cloud security architecture (Azure preferred)Experience with security automation and orchestration