Staff Information Security Engineer

Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide. Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves. We are seeking a Staff Information Security Engineer to join Five9's Information Security team. This role will own the operationalization and ongoing maturity of Five9's Cyber Resiliency program (the practice of using tooling to continuously identify, prioritize, and remediate infrastructure resilience issues across our AWS, GCP, Azure cloud environments). You'll be responsible for program governance, tool ownership, process development, and engineering engagement to scale the program across the organization. As secondary responsibilities, you will support the Cloud Security program as a senior technical resource. Key Responsibilities: Cyber Resiliency Program (Primary) Own the operational lifecycle of the Cyber Resiliency program, including tool administration, system and resource mapping, criticality tiering, and issue triage workflows Develop and maintain program governance: process documentation, SLAs for remediation, escalation paths, and quarterly review cadences Build executive reporting for security and engineering leadership: resilience score trends, remediation velocity, IaC coverage, and risk exposure by system criticality tier Drive the communication plan for the program, ensuring engineering teams understand expectations before receiving remediation tickets Define and maintain issue prioritization frameworks that balance system criticality, environment, severity, and remediation effort Partner with engineering leads to drive remediation of infrastructure resilience issues, removing blockers and tracking progress through Jira Cloud