Security Engineer (Threat Intel)

Anthropic sits at the frontier of AI development, which makes us one of the most interesting targets in the world for nation-state and advanced criminal actors. The Threat Intelligence function within our Detection & Response team exists to make sure we see them coming. As a Threat Intelligence Engineer, you’ll be a hands-on practitioner responsible for producing the actionable intelligence that drives our detections, hunts, and defensive priorities.

You’ll track the adversaries most likely to target a frontier AI lab, build the tooling and pipelines that turn raw indicators into operational defenses, and work shoulder-to-shoulder with detection engineers and incident responders to make sure intelligence actually changes outcomes. This is a builder’s role on a small, high-leverage team — you’ll have broad latitude to shape how threat intelligence is collected, analyzed, and operationalized at Anthropic.

• 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.

Benefits:

• Comprehensive health, dental, and vision insurance for you and your dependents.
• Inclusive fertility benefits via Carrot Fertility.
• 22 weeks of paid parental leave.
• Flexible paid time off and absence policies.
• Mental health support for you and your dependents.
• Competitive salary and equity packages.
• Optional equity donation matching at a 1:1 ratio, up to 25% of your equity grant.
• Retirement plans with competitive matching.
• Life and income protection plans.
• $500/month flexible wellness and time saver stipend.
• Commuter benefits.
• Annual education stipend.
• Home office stipends.
• Relocation support for those moving for Anthropic.
• Daily meals and snacks in the office.

Qualifications:

• Have experience authoring detection logic (YARA, Sigma, Snort/Suricata, or SIEM-native queries) and understand what makes a detection durable vs. brittle.
• Have 5+ years of hands-on experience in cyber threat intelligence, threat hunting, or intrusion analysis at an organization facing sophisticated adversaries.
• Have an existing network in the threat intelligence community and a track record of productive bidirectional sharing.
• Can write clearly and concisely — your intelligence products are read and acted on, not filed away.
• 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 deep, demonstrable knowledge of specific nation-state or advanced criminal threat actors — their tooling, infrastructure patterns, tradecraft, and targeting.
• 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.
• 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.

We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed. We urge you not to exclude yourself prematurely and to submit an application if you’re interested in this work.