[Remote] Senior DevOps Engineer

Note: The job is a remote job and is open to candidates in USA. 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.ResponsibilitiesDesigning 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 guardrailsDesigning, automating, and operating multi-tenant clusters across Nova, Neutron, Octavia, Manila, Cinder, Ironic, and Glance, ensuring performance, tenant isolation, and lifecycle automationEnabling 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 improvementSkills7+ years in infrastructure, platform, or SRE engineering rolesCertified Kubernetes Administrator (CKA)Hands-on mastery of both OpenStack and Rancher Kubernetes in production, with focus on automation, lifecycle management, and high availabilityProficiency with Terraform, Ansible, Helm, Argo CD, and scripting in Python/Go/BashDeep understanding of Linux internals and system performanceProven application of SRE practices in high-stakes, always-on environmentsStrong 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 passthroughOpenStack: Magnum integration, Tempest/Rally for upgrades and validationCompliance: PCI, FedRAMP, SOC2, FIPS, CIS, NIST standardsUpstream contributions to OpenStack or Kubernetes projectsBenefitsAnnual performance bonusStockOther applicable incentive compensation plansHealth, dental, and vision coverage, beginning on the first day of employment.Five9 covers 100% of the employee portion of the health, dental and vision coverage and shares a high portion of the dependent cost.Short & Long-Term DisabilityBasic Life Insurance401k saving plan with employer matchingAccess to an innovative mental health support platform that offers personalized care and resources in areas such as: therapy, coaching and self-guided mindfulness exercises for all covered employees and their covered dependents.Generous employee stock purchase planPaid Time OffCompany paid holidaysPaid volunteer hours12 weeks paid parental leaveCompany OverviewFive9 is a cloud-based call center software company that specializes in sales, marketing, and customer service. It is a sub-organization of Five Rivers Solutions. It was founded in 2001, and is headquartered in San Ramon, California, USA, with a workforce of 1001-5000 employees. Its website is http://www.five9.com.Company H1B SponsorshipFive9 has a track record of offering H1B sponsorships, with 4 in 2026, 13 in 2025, 15 in 2024, 13 in 2023, 20 in 2022, 15 in 2021, 15 in 2020. Please note that this does not guarantee sponsorship for this specific role.