Senior Director, Infrastructure Architecture & Engineering

Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide. They are seeking a Senior Director of Infrastructure Architecture & Engineering to lead the platform function, ensuring high-performance engineering practices and driving the modernization of infrastructure. The role involves hands-on engagement in architecture and engineering, as well as building and scaling teams that support the company's cloud initiatives.

Responsibilities:

• Own the platform function end-to-end across Openstack and Kubernetes (private cloud), Infrastructure as Code, automation frameworks, shared platform services, and AI compute infrastructure
• Operate the platform as a product for internal engineering teams, driving adoption, self-service, developer experience, standardized platform patterns, and measurable delivery outcomes
• Lead the platform software supply chain, including source control, code review, CI/CD, testing, security validation, artifact management, observability, deployment, rollback, release management, and lifecycle governance
• Define and mature core platform services including observability, secrets management, DNS/DDI, identity, registries, CI/CD tooling, and GPU-enabled platform capabilities supporting AI workloads
• Drive platform architecture and technology direction across Kubernetes, storage, and virtualization including operational hardening, scalability, and modernization initiatives
• Establish scalable operational and engineering practices including SLOs, incident escalation response, change management, on-call health, runbooks, post-incident corrective actions, ADRs, code reviews, and shared ownership models
• Build and develop a high-performing platform engineering organization through strong hiring, leveling, coaching, engineering standards, and organizational design practices
• Partner closely with network, compute, storage, and datacenter operations leadership, security, production operations, cloud engineering, and automation teams to drive aligned platform execution at scale

Requirements:

• Proven track record building, scaling, and transforming high-performing engineering organizations
• Experience stabilizing and modernizing under-resourced teams and operational environments
• Strong leadership skills with the ability to build accountability, ownership, and engineering discipline across globally distributed teams
• Proven ability to lead large-scale technical and organizational transformation in complex production environments
• Strong cross-functional leadership and stakeholder management skills across engineering, operations, security, and executive teams
• Ability to mentor senior technical leaders and build scalable, high-performing organizations
• Strong decision-making, prioritization, communication, and conflict resolution skills in high-pressure environments
• Proven ability to build, scale, and mature engineering organizations, including hiring, coaching, organizational design, and raising engineering standards
• Strong executive communication skills with the ability to present platform health, reliability, adoption, cost, and roadmap metrics to senior leadership
• Experience leading globally distributed engineering teams and embedded partner resources within a unified operating model
• Bachelor's degree in computer science, engineering, business or related field
• 10+ years leading platform, infrastructure, or cloud engineering organizations in large-scale production environments, including experience operating platforms as software products
• Strong hands-on software engineering background with experience in Python, Go, or similar languages, along with Infrastructure as Code expertise using Terraform, Ansible, Git, or equivalent tooling
• Deep experience building and operating CI/CD-driven platform environments with integrated testing, deployment, observability, rollback, security validation, and lifecycle management practices
• Strong production-scale experience with on-premises Kubernetes and container platforms, including Rancher, OpenShift, Anthos, or similar technologies
• Experience building and operating Internal Developer Platforms (IDPs) focused on self-service capabilities, standardized platform services, and developer adoption
• Strong understanding of Site Reliability Engineering (SRE) principles, including SLOs, error budgets, observability, incident management, and operational reliability practices
• Experience implementing security-as-code, policy-as-code, software supply chain controls, and progressive delivery patterns within CI/CD environments
• Experience operating hybrid and multi-cloud environments, including public cloud, private cloud, virtualization, and AI/GPU-enabled infrastructure platforms