Principal Adversary Emulation Engineer

Senior Adversary Emulation Engineer

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Comcast Cybersecurity protects Comcast, our customers, our workforce, our partners, and our technology platforms from increasingly sophisticated cyber threats. We are seeking a Senior Adversary Emulation Engineer to help establish and mature adversary emulation as a repeatable capability within Threat Detection. This role sits at the intersection of adversary emulation, threat detection engineering, threat hunting, telemetry validation, and purple team operations.

The successful candidate will design and execute controlled, threat-informed emulation scenarios; validate detection coverage across enterprise telemetry sources; generate high-fidelity data for threat hunting; and translate findings into improved detections, hunt content, logging requirements, automations, and actionable reporting. This is a hands-on senior engineering role for someone who can operate safely in complex enterprise environments, partner across cyber and engineering teams, and help Comcast continuously prove and improve its ability to detect real-world adversary behavior.

Core Responsibilities

• Help establish and mature Comcast's adversary emulation capability, including operating model, rules of engagement, approval workflows, success metrics, reporting standards, and repeatable validation processes.
• Design, plan, and execute controlled adversary emulation scenarios based on current threat intelligence, priority adversary behaviors, emerging attack techniques, and Comcast-relevant risk scenarios.
• Emulate real-world attacker tactics, techniques, and procedures using frameworks such as MITRE ATT&CK, while maintaining strict safety, deconfliction, and operational controls.
• Build automation and AI-assisted workflows to streamline emulation planning, evidence collection, test execution, detection validation, reporting, and metrics tracking, with appropriate human review, auditability, and governance.
• Partner with Threat Detection Engineering to validate detection coverage, alert fidelity, enrichment quality, triage workflows, and detection lifecycle effectiveness.
• Partner with Threat Hunting to generate high-fidelity telemetry, validate hunt hypotheses, and convert emulation outcomes into reusable hunt content.
• Identify and document logging gaps, telemetry quality issues, detection blind spots, enrichment deficiencies, and control weaknesses across endpoint, identity, cloud, network, email, SaaS, application, and data-platform sources.
• Develop repeatable emulation playbooks, test cases, validation workflows, and reporting artifacts that can be reused across priority threats and enterprise environments.
• Evaluate adversary emulation, breach-and-attack simulation, security validation, and emerging AI-enabled security technologies for use within Comcast's threat operations environment.
• Support purple team exercises, threat-informed defense initiatives, after-action reviews, and continuous improvement efforts across cyber operations.
• Produce clear technical reports and executive-ready summaries that translate emulation results into prioritized recommendations, measurable detection improvements, and risk-informed remediation actions.
• Collaborate across Cybersecurity, Security Operations, Security Incident Response, Threat Intelligence, Threat Hunting, Detection Engineering, Security Engineering, Cloud, Identity, Endpoint, Network, Product, and other technical teams.

Required Qualifications

• Bachelor's degree or equivalent experience in cybersecurity, computer science, information technology,…