Senior DevOps Engineer

Five9 is a leading provider of cloud contact center software, dedicated to enhancing customer experience. The Senior DevOps Engineer will be responsible for managing and optimizing both Kubernetes and OpenStack environments, ensuring scalability, security, and performance for critical workloads.

Responsibilities:

• Designing and maintaining bare-metal clusters with GitOps-driven automation (Fleet, Argo CD, Terraform, Helm), optimized for performance and secured with RBAC, network policies, and compliance guardrails
• Designing, automating, and operating multi-tenant clusters across Nova, Neutron, Octavia, Manila, Cinder, Ironic, and Glance, ensuring performance, tenant isolation, and lifecycle automation
• Enabling interoperability (e.g., Magnum, storage backends, network overlays) and shared observability stacks (Prometheus, Grafana, Loki/EFK)
• Applying uniform practices across both stacks for capacity planning, high availability, resilience, incident response, and continuous improvement

Requirements:

• 7+ years in infrastructure, platform, or SRE engineering roles
• Certified Kubernetes Administrator (CKA)
• Hands-on mastery of both OpenStack and Rancher Kubernetes in production, with focus on automation, lifecycle management, and high availability
• Proficiency with Terraform, Ansible, Helm, Argo CD, and scripting in Python/Go/Bash
• Deep understanding of Linux internals and system performance
• Proven application of SRE practices in high-stakes, always-on environments
• Strong experience with observability platforms (Prometheus, Grafana, Loki/ELK/EFK)
• Kubernetes: Rancher add-ons (Fleet, Longhorn, CIS Scanning), security hardening (CKA/CKS)
• Advanced networking and scheduling: VXLAN, BGP, NIC offload, NUMA-aware scheduling, SR-IOV, and PCI passthrough
• OpenStack: Magnum integration, Tempest/Rally for upgrades and validation
• Compliance: PCI, FedRAMP, SOC2, FIPS, CIS, NIST standards
• Upstream contributions to OpenStack or Kubernetes projects