Senior OpenStack DevOps 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  highly experienced Senior OpenStack DevOps Engineer  to architect, implement, and support our community-driven OpenStack-based private cloud infrastructure. You will be directly responsible for ensuring the scalability, resilience, automation, and performance optimization of our cloud environment by leveraging Infrastructure-as-Code (IaC) tools like  Ansible , and Terraform, or  Pulumi . This is a deeply technical role requiring  expert-level understanding of OpenStack internals  across major projects including  Neutron, Octavia, Manila, Cinder, Nova, Ironic, and Glance . You will also collaborate with platform and SRE teams to maintain secure, performant, and multi-tenant-isolated services that serve high-throughput, mission-critical applications. Key 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. Minimum Qualifications 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. Preferred Qualifications 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. What You’ll Get A collaborative team that’s deeply invested in  open source , community contribution, and infrastructure excellence. Complex technical challenges that require creative, scalable solutions. The opportunity to shape a next-generation private cloud platform built on  true open infrastructure principles . Access to the latest tools, frameworks, and upstream project developments. Skills and Attributes: 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. Work Location: This role is fully remote for candidates who reside outside the 30 mil