As an Incident Response Security Consultant at Mandiant, you'll investigate and contain cyber security incidents, collaborating with internal and customer teams. Responsibilities include conducting forensic analysis (host, network, log, malware triage), recognizing attacker TTPs and IOCs, automating threat tracking, and determining if compromise notifications are needed. You'll create reports and presentations for technical and executive audiences, helping clients prepare for, mitigate, and respond to threats. The role involves working on complex, high-profile incidents, performing threat hunting, and providing incident response services (investigation, containment, remediation, crisis management).