Senior Site Reliability Engineer - Storage Platforms

Five9•Irving, TX

13h•Hybrid

About The Position

Five9 is seeking a highly experienced Senior Site Reliability Engineer to design, implement, and support Software Defined Storage (SDS) and Kubernetes platforms in a private cloud environment. The role focuses on scalability, resilience, automation, and performance through Infrastructure-as-Code and GitOps practices. It requires expert-level knowledge of Software Defined Storage and Kubernetes, plus extensive working knowledge of Linux operating systems. The engineer will collaborate with platform and SRE teams to maintain secure, performant, multi-tenant-isolated services for high-throughput, mission-critical applications. The position designs and operates storage architectures across private and public cloud regions, supports enterprise storage and SDS platforms, and builds self-service storage workflows for Kubernetes CSI and OpenStack consumers. It develops automation and infrastructure delivery processes, establishes observability and auto-remediation, and maintains highly available, disaster-recovery-capable infrastructure. The role also involves technical design documentation, cross-domain troubleshooting, on-call rotations, incident response, root cause analysis, and global collaboration on change management and operational practices. This is a hybrid role requiring three days per week (Tuesday, Wednesday, and Thursday) in Five9’s Dallas office. The US base salary range is $90,700–$252,200. Total compensation may also include an annual performance bonus, stock, or other applicable incentive compensation. Benefits include health, dental, and vision coverage beginning on the first day of employment; short- and long-term disability; basic life insurance; a 401(k) plan with employer matching; mental health support resources; an employee stock purchase plan; paid time off; company-paid holidays; paid volunteer hours; and 12 weeks of paid parental leave.

Requirements

At least 6 years of experience managing enterprise storage and Kubernetes platforms on Linux.
Strong hands-on experience with SDS solutions such as Ceph and Longhorn, and storage migrations from legacy systems.
Experience with block, file, and object storage, including Fibre Channel and IP-based protocols.
Experience with NVMe-oF or iSCSI fabrics.
Expert knowledge of Kubernetes and Linux systems, including Ubuntu and RHEL/CentOS.
Proficiency with Infrastructure-as-Code tools, including Ansible and Terraform.
Strong scripting skills in Python and Bash.
Strong working knowledge of enterprise DNS and its integrations with Kubernetes.
Experience operating 24x7 mission-critical production environments.
Hands-on experience with KVM hypervisors, such as SUSE Harvester and OpenStack.
Strong written and verbal communication skills.
Proficiency with Git, CI/CD pipelines, and automated testing frameworks.
Ability to write technical documentation and contribute to community wikis or knowledge bases.
Bachelor’s degree in computer science or equivalent professional experience.
Ability to translate complex, cross-domain requirements into scalable and resilient cloud infrastructure and automation solutions.
Strong interpersonal and communication skills and a track record of collaborating with developers, operations, security, and product stakeholders.
Passion for knowledge-sharing and mentorship, with experience guiding junior engineers.

Nice To Haves

Golang (Go) scripting experience.
OpenStack Cinder multi-backend administration.
Experience with backup platforms such as Rubrik.
Understanding of CIS/NIST security and infrastructure lifecycle management.
ITIL Foundation or advanced certifications supporting ITSM methodology.
Background in telecommunications, edge cloud, or large enterprise environments.
CNCF Certified Kubernetes Administrator (CKA), Certified Kubernetes Security Specialist (CKS), or Red Hat EX125 Ceph Storage Administrator certification.
Master’s degree in computer science, IT, engineering, or a related field; equivalent experience and relevant industry certifications may also be considered.

Responsibilities

Design, implement, and operate large-scale Software Defined Storage architectures across private and public cloud regions within ITIL methodology.
Deploy and support enterprise storage platforms, including Pure Storage, HPE, and NetApp, and SDS solutions, including Ceph and Longhorn.
Build self-service storage workflows for Kubernetes CSI and OpenStack consumers, including VM and bare-metal users.
Develop Infrastructure-as-Code using Ansible, Terraform, Helm, and Git, with Python and Bash automation.
Implement CI/CD pipelines for infrastructure updates, patching, upgrades, testing, and rollback.
Build observability, alerting, and auto-remediation using GitOps and tools such as Prometheus, Loki, and Grafana.
Architect and maintain high availability, disaster recovery, and scale-out infrastructure.
Develop and review high-level and low-level design documents for storage infrastructure.
Perform deep troubleshooting across storage, Kubernetes, hypervisors, networking, and Linux systems.
Participate in on-call rotations, incident response, and root cause analysis.
Collaborate globally on change management, documentation, and operational best practices.
Collaborate across multidisciplinary teams and share knowledge, mentor junior engineers, and support a culture of continuous learning and technical excellence.

Benefits

Health, dental, and vision coverage beginning on the first day of employment; Five9 covers 100% of the employee portion and shares a high portion of dependent costs.
Short- and long-term disability coverage.
Basic life insurance.
401(k) savings plan with employer matching.
Mental health support platform offering therapy, coaching, and self-guided mindfulness resources for covered employees and dependents.
Employee stock purchase plan.
Paid time off.
Company-paid holidays.
Paid volunteer hours.
12 weeks of paid parental leave.
Annual performance bonus, stock, and/or other applicable incentive compensation plans may be included in total compensation.