Senior Network Engineer, Network Operations in San Ramon

Job Description Job Description

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 and foster an inclusive environment, empowering our employees to be their authentic selves.

We are seeking a highly motivated technical leader to guide the Network Engineering and Operations team in delivering scalable, automated, and cloud-ready networking solutions while fostering a culture of continuous improvement.

• Partner with cross‑functional stakeholders to design and deliver next‑data center fabric architectures, leveraging technologies such as VXLAN, Cisco Nexus Dashboard, Kubernetes, and AI/ML‑enabled networking.
• Provide technical leadership and mentorship to a team of engineers, strengthening troubleshooting capabilities, operational rigor, and adoption of network engineering best practices.
• Drive automation strategy and execution using Ansible, Terraform, and CI/CD pipelines, including the design, deployment, and continuous improvement of automation for high‑impact operational and reliability use cases.
• Own and support all operational aspects of network security infrastructure, including operating system maintenance, vulnerability management, capacity planning, lifecycle management, and certificate administration.
• Track and manage projects, processes, and technology initiatives across the team, ensuring alignment, visibility, and timely execution.
• Analyze historical network incidents to identify systemic issues, perform root cause analysis, and implement automated remediation to prevent recurrence.
• Lead the review, analysis, and execution of network change requests within the data center fabric domain, ensuring adherence to change management and risk mitigation standards.
• Develop and report operational and performance metrics using observability platforms such as Prometheus, Grafana, and ELK to drive data‑informed decisions.
• Manage and operate data center fabric services across hybrid and multi‑cloud environments, including on‑premises infrastructure, Google Cloud Platform (GCP), and Amazon Web Services (AWS).
• Participate in incident response activities, providing technical leadership during outages and leading post‑incident root cause analysis and corrective action planning.
• Foster a culture of continuous improvement by enabling team members to proactively enhance processes, tooling, and operational maturity.
• Lead the introduction of new processes and automation capabilities that improve scalability, reliability, and operational efficiency.
• Maintain strong operational focus on data center fabric technologies while coordinating cross‑team efforts with network security and load balancing functions to ensure end‑to‑end service reliability.

• Bachelor's degree in computer science or a related technical field, or equivalent practical experience.
• Proven technical expertise in fast‑paced, dynamic, production environments supporting mission‑critical infrastructure.
• Extensive hands‑on experience and advanced troubleshooting capabilities with data center fabric and software‑defined networking (SDN) technologies, including VXLAN, NX‑OS, Open Stack Neutron, Calico (Kubernetes), and enterprise routing and switching.
• 8+ years of experience in technology roles, including 3+ years serving as a technical subject‑matter expert.
• Strong understanding of, with hands‑on experience with dynamic routing protocols, particularly BGP.
• Demonstrated experience developing root cause analyses and implementing error prevention and corrective action procedures.
• Experience defining, measuring, and reporting site reliability using SLI/SLO metrics.
• Proven experience designing, implementing, or operating large‑scale data centers and complex infrastructure environments.
• Hands‑on knowledge and operational experience with Cisco Nexus, F5, and Palo Alto platforms.
• Experience managing and operating public cloud networking environments;
  Google Cloud Platform…