SeniorSecurityEngineer,AWSSecurityIncidentResponse

AWS Security Incident Response is looking for a Senior Security Engineer who builds the automation mechanisms that scale security response. You will investigate complex security incidents hands-on, build the frameworks that turn investigation expertise into scalable detection and auto-remediation, and architect the AI feedback loops that make the service smarter with every investigation. The AWS Security Incident Response team provides 24/7 security response through a follow-the-sun operating model. The service combines automated triage workflows, AI-powered investigation agents, and human security analysts to respond to threats across customer AWS environments at massive scale. Our AI systems autonomously resolve over 90% of routine investigations within minutes. The next challenge is building the mechanisms that accelerate this further — enabling every engineer on the team to contribute to detection and automation quality from their investigation work. Your deep understanding of how attacks work — from initial exploitation through lateral movement to data exfiltration — is what makes your automation effective. You will build detection enhancements, auto-remediation playbooks, and AI training pipelines that catch real threats, not just generate noise. We treat every investigation as a confirmed security incident until the data proves otherwise. Native Japanese language skills and fluent English language skills in speaking, reading, and writing. Key job responsibilities - Investigate and respond to complex security incidents hands-on — applying malware analysis, forensic analysis, or attribution skills to credential compromise, data exfiltration, supply chain attacks, and cryptomining - Lead incident response for customers during high-severity events: scope blast radius, coordinate containment, guide remediation, and get on calls with customers to walk them through what was compromised and the specific steps to contain the threat - Own the response-to-automation fly