Senior OpenStack DevOps Engineer

Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide. They are seeking a highly experienced Senior OpenStack DevOps Engineer to architect, implement, and support their community-driven OpenStack-based private cloud infrastructure.

Responsibilities:

• Design and implement multi-tenant OpenStack infrastructure aligned with open community standards, including network service isolation and tenant-aware resource scheduling
• Automate the provisioning, lifecycle management, and configuration of OpenStack services and supporting components using Ansible, Terraform, or Pulumi
• Extend and maintain integrations for core OpenStack services:
• Neutron: Custom network plugins/drivers, L2/L3 routing, BGP, DHCP, and tenant network segmentation (VLAN, VXLAN, Geneve)
• Octavia: HA load balancing with amphora and provider drivers, TLS offloading, Layer 4/7 routing
• Manila: Share drivers for NFS/CIFS, tenant access control, storage backends
• Cinder: Block storage provisioning, volume snapshots, multi-attach, backend tuning
• Nova: Compute resource scheduling, NUMA/cpu pinning, SR-IOV and PCI passthrough
• Ironic: Bare metal provisioning workflows, BIOS/IPMI automation, PXE and UEFI boot configuration
• Glance: Image lifecycle management, backing store optimization, image caching strategies
• Contribute to upstream OpenStack projects when needed (bug fixes, driver enhancements, documentation)
• Implement continuous delivery pipelines for OpenStack updates, including patch management, service upgrade testing, and rollback procedures
• Develop automated monitoring, alerting, and healing mechanisms using GitOps principles and observability stacks (e.g., Prometheus, Loki, Grafana)
• Harden services for high availability, disaster recovery, and scale-out operations
• Perform deep-dive troubleshooting and performance analysis of OpenStack services across control and data planes
• Participate in on-call rotation, incident response, and root cause analysis for platform reliability issues

Requirements:

• 5+ years of experience operating and automating large-scale OpenStack cloud environments, preferably in community-driven or upstream-contributing teams
• Expert-level proficiency in Infrastructure-as-Code with Ansible, Terraform, or Pulumi
• Strong hands-on knowledge of Neutron, Octavia, Manila, Cinder, Nova, Ironic, and Glance
• Strong Linux (RHEL/CentOS/Ubuntu) systems engineering background with advanced scripting in Python, Bash, or Go
• Fluency with Git, CI/CD pipelines, and automated test frameworks
• Strong understanding of L2/L3 networking, SDN overlays (VXLAN, Geneve), load balancing (Octavia), and storage protocols (SDS) (iSCSI, NFS, CEPH)
• Demonstrated success building or maintaining multi-region or high-availability OpenStack clusters
• Experience with container technologies (e.g., Docker) and orchestration tools (e.g., Kubernetes) is a plus
• Ability to write technical documentation and contribute to community wikis or knowledge bases
• Contributions to upstream OpenStack codebases or participation in SIGs/WGs
• Familiarity with RBAC, Keystone federation, Barbican (secrets management), and Ceilometer/Gnocchi/Aodh
• Understanding of security best practices for tenant isolation, microsegmentation, and compliance (e.g., CIS, NIST)
• Background in telco, edge cloud, or large enterprise infrastructure environments
• Experience building and maintaining automated test environments for OpenStack upgrades and validation (e.g., Tempest, Rally, or custom test harnesses)
• Bachelor's degree in computer science, IT, Engineering, or a related field preferred; equivalent experience and relevant industry certifications will also be considered