Senior OpenStack DevOps Engineer

Five9 is a provider of cloud contact center software that brings cloud innovation to customers worldwide. The Senior OpenStack DevOps Engineer will architect, implement, and support OpenStack-based private cloud infrastructure, focusing on scalability, resilience, automation, and performance optimization. The role also involves maintaining OpenStack services, implementing delivery and observability systems, troubleshooting platform issues, and supporting high availability and disaster recovery.

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
• Ability to write technical documentation and contribute to community wikis or knowledge bases
• Analytical Thinking & Problem Solving: Demonstrated ability to translate complex, cross-domain requirements into scalable and resilient cloud infrastructure and automation solutions
• Collaboration & Teamwork: Strong interpersonal and communication skills with a proven track record of effective collaboration across multidisciplinary teams, including developers, operations, security, and product stakeholders
• Mentorship & Leadership: Passionate about knowledge-sharing and mentorship, with experience guiding junior engineers and fostering a team culture of continuous learning, innovation, and technical excellence in cloud engineering and DevOps practices
• Experience with container technologies (e.g., Docker) and orchestration tools (e.g., Kubernetes) is a plus
• 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