Cyber Security Engineer - Threat Detection

Job DescriptionJob PurposeThe ICE Cybersecurity Threat Detection team is responsible for detecting malicious behavior across ICE's global infrastructure quickly and reliably enough to contain it. We build, tune, and maintain the detection content that security operation teams depend on, and hunt proactively for threats that existing controls do not catch, working alongside threat intelligence, incident response, and red team functions to keep coverage grounded in real adversary behavior.ResponsibilitiesDetection Engineering - Design, build, test, and maintain detection content across SIEM, EDR, and NDR platforms, and document the intent, data source, and expected behavior of each detectionDetection Tuning and Health - Own false positive rates, alert volume, and rule health for assigned detection areas, including retiring logic that no longer earns its placeDetection Coverage - Map detection coverage to the MITRE ATT&CK framework, identify gaps, and propose the telemetry or logic needed to close themThreat Intelligence Integration - Convert threat intelligence reporting into prioritized detection and hunting work, so coverage follows the adversaries and techniques most relevant to the sector rather than whatever arrived most recentlyProactive Threat Hunting - Develop and execute focused hunts to discover threats that evade existing controls, and promote successful hunt outcomes into durable production detectionsRed Team Gap Remediation - Take ownership of detection gaps reported through red team and purple team exercises; track each gap to closure, build or amend the detection, and validate that the exercise activity is caught on retestLog Source Health - Validate the health and completeness of security log sources, detect collection failures and silent feeds, and onboard or update SIEM log sources in a timely mannerAutomation and Tooling - Apply a developer and problem-solving mindset to the work, using scripting to build internal tooling, process and normalize data, and remove repetitive manual effort wherever it appearsKnowledge and ExperienceRelevant experience in threat detection, security operations, or threat huntingHands on, day to day experience with SIEM, EDR, and NDR platforms, including writing and tuning detection logicWorking knowledge of a scripting language for automation, at the level needed to build useful internal toolingDemonstrated ability to investigate suspicious activity end to end: read the logs, form a conclusion, and communicate it clearlyFamiliarity with the MITRE ATT&CK framework and the ability to reason about adversary tradecraft rather than only indicatorsSolid understanding of operating system internals, networking, and authentication as they appear in security telemetryUniversity degree in Engineering, MIS, CIS, or related discipline; or equivalent years of experiencePreferred ExperienceAuthoring Sigma rules and working with portable, vendor neutral detection formatsDetection as code practices, including Git workflows, peer reviewed rule changes, automated rule testing, and pipeline based deploymentStructured hunting methodologies such as PEAK or TaHiTI, and experience hunting against a documented backlog rather than ad hocApplied AI engineering in a security context, including use or development of LLM assisted tooling for triage, enrichment, rule drafting, or log summarization, together with a realistic understanding of where these systems fail and how to evaluate their outputMalware analysis, digital forensics, or reverse engineering fundamentalsSpecific TechnologiesSIEM platforms including Splunk and Elasticsearch. Endpoint detection and response platforms including Tanium, CrowdStrike, and SentinelOne. Network detection and response tooling and network traffic analysis. MITRE ATT&CK. Scripting and automation in Python or PowerShell. Windows, Linux, and cloud security telemetry, including authentication, process execution, and network log formats. Version control and ticketing workflows.