Senior DevOps Engineer - Five9

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 looking for a Senior Kubernetes engineer to help design, build, and operate our on-premises and hybrid Kubernetes platform. This role is part of our Platform Engineering and Infrastructure Reliability teams and will focus on running Kubernetes at scale on bare-metal and integrated environments.

You’ll work on automation, observability, performance tuning, and security to make sure our platform is reliable and ready for mission-critical workloads.

Responsabilities

• Deploy and operate Kubernetes clusters on-premises at enterprise scale.
• Automate cluster lifecycle and application management with Terraform, Helm, and GitOps tools.
• Tune clusters for performance on bare-metal hardware (CPU, memory, and networking).
• Implement Kubernetes security best practices (RBAC, network policies, pod security).
• Build monitoring and alerting with Prometheus, Grafana, and logging stacks.
• Contribute to incident response and postmortems, helping improve reliability over time.

Requirements

• 5+ years of experience in infrastructure, platform engineering, or SRE roles.
• Strong hands-on experience running Kubernetes on-premises in production environments.
• Good knowledge of Linux systems, networking, and container runtimes.
• Familiarity with Terraform, Helm, Argo CD, or similar automation/GitOps tools.
• Experience with observability tools like Prometheus, Grafana, or ELK/EFK.
• Comfortable troubleshooting and tuning Kubernetes clusters.

Nice to Have

• Experience integrating Kubernetes with OpenStack.
• Familiarity with Rancher and Rancher add-ons (Fleet, Longhorn, CIS Scanning).
• Knowledge of compliance-driven environments (PCI, SOC2, FedRAMP).
• Kubernetes certifications (CKA, CKS, or similar).

Why This Role Matters

You will define how we build and run Kubernetes at scale—from bare metal to secure, observable production clusters. As a key leader bridging the Platform and Infrastructure orgs, you’ll shape the automation, security, and performance foundation that all of engineering builds on.

Benefits:

• Five9 Shares
• Bonus Scheme
• 10% Flex Benefit
• Meal Allowance
• Medical Insurance
• Life Insurance
• 25 day Annual Leave + Public Holidays

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better we are. Five9 is an equal opportunity employer.

View our privacy policy, including our privacy notice to California residents here: https://www.five9.com/pt-pt/legal

Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.