Senior OpenStack DevOps Engineer Five· Remote · US · DevOps & Release –ago

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 Open Stack Dev Ops Engineer
to architect, implement, and support our community-driven Open Stack-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 Open Stack 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.

• Design and implement
  multi-tenant Open Stack infrastructure
  aligned with open community standards, including network service isolation and tenant‑aware resource scheduling.
• Automate the provisioning, lifecycle management, and configuration of Open Stack services and supporting components using
  Ansible
  ,
  Terraform
  , or
  Pulumi
  .
• Extend and maintain integrations for core Open Stack 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 Open Stack projects when needed (bug fixes, driver enhancements, documentation).
• Implement
  continuous delivery pipelines
  for Open Stack updates, including patch management, service upgrade testing, and rollback procedures.
• Develop automated monitoring, alerting, and healing mechanisms using Git Ops 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 Open Stack services across control and data planes.
• Participate in on‑call rotation, incident response, and root cause analysis for platform reliability issues.

• 5+ years of experience operating and automating large‑scale
  Open Stack 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 Open Stack clusters
  .
• Experience with container technologies (e.g., Docker) and orchestration…