Role 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. Our Voice division is seeking a Senior DevOps Engineer to lead the automation of voice technology deployments across both on-premise data centers and public cloud environments. This is a high-impact role where you'll help shape the infrastructure that powers critical voice services, supporting both scalability and operational excellence. - Design, develop, and maintain Infrastructure as Code (IaC) frameworks to automate deployment of voice technologies. - Own and operate automation pipelines and infrastructure in a distributed, production-grade environment. - Lead IaC and DevOps best practices, ensuring systems are reliable, scalable, and secure. - Drive initiatives to modernize and optimize voice platform automation. - Analyse recurring network or platform incidents and introduce automation to reduce operational risk. - Deliver clear documentation and handoffs to operational teams to ensure seamless support and transition. - Provide technical guidance and support to operations and engineering teams when needed. - Promote a collaborative, agile work culture aligned with continuous delivery and DevOps principles. - Champion the customer experience by building reliable systems that support Five9's voice infrastructure. Qualifications - 5+ years of experience in engineering roles focused on DevOps, operations, or infrastructure preferably within telecom or service provider environments. - Proven hands-on experience with automation frameworks such as Ansible and Terraform, including writing and maintaining reusable modules. - Solid knowledge of AWS and GCP services with experience developing and deploying cloud-native infrastructure components. - Proficiency in Unix/Linux systems, emphasising CLI-based administration and shell scripting. - Experience designing and integrating RESTful APIs and web service workflows. - Strong background in CI/CD pipelines using GitLab, GitHub Actions, or similar platforms. - Excellent written and verbal communication skills in English; able to work effectively in distributed, cross-functional teams. Company Description 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: Privacy Policy . Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.

• Collaborate with Software Engineers to improve reliability and performance in their subsystems • Partner with System Administrators in automating toil and eliminating alerts • Evolve observability and monitoring capabilities to identify and solve problems before they impact the business • Support development environments to help us achieve our delivery and quality goals • Research and evaluate technologies, tools and services to influence buy-vs-build decisions • Develop expertise in diverse technical and business domains • Expand your knowledge of the technical stacks used

• Collaborate with Feature Development teams to promote new component versions into production as efficiently as possible. • Maintain the system to agreed service level and availability objectives using real-time monitoring tools and system-generated metrics. • Instrumentation of new system metrics and alerts to pre-empt issues and improve performance. • Respond to monitoring alerts and customer incidents, taking preventative/remedial action to minimise customer impact. • Liaising with key customer stakeholders to schedule capability changes and capture new service requirements as they arise. • Apply automation techniques to reduce the burden of manual operations.

**Key Responsibilities:** - Maintain and develop Linux infrastructure across dev, test, stage, and production environments - Configure and optimize CI/CD pipelines (GitLab CI) - Work with Docker / Docker Compose - Set up monitoring and alerting (Prometheus, Grafana, Zabbix) - Configure web services, reverse proxies, and load balancing - Automate tasks using scripts and AI tools (generation, optimization, refactoring) - Analyze logs and incidents using AI (faster diagnosis and root cause analysis) - Implement simple automation/AI agents for routine operations and alerting - Reduce manual work and incident response time - Document infrastructure in a structured way (for reuse and AI‑powered search)