Security Engineer - Threat Intel

Anthropic•New York City, NY

1d•Hybrid

About The Position

Anthropic is at the forefront of AI development, making it a prime target for sophisticated adversaries like nation-state and advanced criminal actors. The Threat Intelligence function within the Detection & Response team is crucial for anticipating these threats. As a Threat Intelligence Engineer, you will be a hands-on practitioner, responsible for generating actionable intelligence to drive detections, hunts, and defensive priorities. Your role will involve tracking adversaries targeting frontier AI labs, building tools and pipelines to transform raw indicators into operational defenses, and collaborating closely with detection engineers and incident responders to ensure intelligence effectively influences outcomes. This is a builder's role on a small, high-leverage team, offering significant autonomy to shape how threat intelligence is collected, analyzed, and operationalized at Anthropic.

Requirements

Have 5+ years of hands-on experience in cyber threat intelligence, threat hunting, or intrusion analysis at an organization facing sophisticated adversaries
Have deep, demonstrable knowledge of specific nation-state or advanced criminal threat actors — their tooling, infrastructure patterns, tradecraft, and targeting
Are a strong engineer: you write production-quality Python (or similar), have built automation and data pipelines, and don't need to hand requirements to someone else to get tooling built
Are comfortable performing malware analysis, infrastructure analysis (passive DNS, certificate pivoting, netflow), and log analysis to develop and validate your own findings
Have experience authoring detection logic (YARA, Sigma, Snort/Suricata, or SIEM-native queries) and understand what makes a detection durable vs. brittle
Can write clearly and concisely — your intelligence products are read and acted on, not filed away
Have an existing network in the threat intelligence community and a track record of productive bidirectional sharing
Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience
Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience

Nice To Haves

Experience defending cloud-native and research-heavy environments (AWS/GCP, Kubernetes, ML infrastructure, developer tooling and supply chain)
Prior work operating in a threat intelligence role tracking sophisticated or state-sponsored adversaries, where your analysis directly informed detection, threat hunting, and incident response
Experience applying LLMs or other AI tooling to accelerate intelligence collection, enrichment, and analysis
Public research, conference talks, or open-source tooling contributions in the CTI space

Responsibilities

Research, track, and report on threat actors and campaigns targeting AI labs, cloud infrastructure, and the broader technology sector — producing timely, actionable intelligence for Security Engineering stakeholders
Build and maintain tooling and automated pipelines to collect, enrich, correlate, and operationalize indicators of compromise into our detection and alerting stack
Develop and execute intelligence-driven threat hunts across endpoint, cloud, identity, and SaaS telemetry, and turn findings into durable detections
Perform technical analysis of malware, phishing infrastructure, and attacker tooling to extract indicators, TTPs, and attribution signals
Partner with Detection Engineering and Incident Response to translate intelligence into detection rules, hunting hypotheses, and incident context in near-real-time
Curate and triage inbound intelligence from commercial feeds, open source, government, and trusted peer relationships — prioritizing what matters for Anthropic's threat model
Contribute to threat models and risk assessments that inform security architecture and defensive investment across the enterprise
Build and maintain external intelligence-sharing relationships with peer companies, ISACs, and government partners