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. The Senior Manager, Engineering - AI Agents will lead the development and delivery of Five9’s AI Agent software platform, which provides customers with fully autonomous self-service agents for customer support, sales, and services use cases in the contact center. This is one of the hottest areas of application for AI Agent technology!

This role is responsible for building and managing a high-performing engineering team that develops scalable, reliable, and production-grade AI-powered systems used in real-time customer conversations. You will be responsible for hiring and developing engineers, improving engineering processes, and enabling strong execution across the software development lifecycle. While this is a management role rather than an individual contributor position, the ideal candidate will bring strong technical credibility with engineers and guide architecture discussions, technical decisions, and engineering best practices.

You will collaborate closely with Product, SRE, Support, and other engineering teams to deliver an enterprise-grade platform while fostering a culture of operational excellence, ownership, and customer empathy. This role is hybrid. 3 days a week (M, W, TH) in our San Francisco office is required.

Key Responsibilities

Team Leadership Development Hire, onboard, and grow a high-performing engineering teamof 4-8 engineers in the United States Provide coaching, mentorship, and career development for engineers Establish clear ownership, accountability, and engineering rigor Conduct performance management, feedback, and growth planning Foster a culture of collaboration, innovation, and operational excellence Mentor senior engineers and emerging technical leaders Delivery Execution Lead planning and enable strong execution of engineering initiatives and product roadmap Ensure projects are delivered predictably and with high quality Focus on customer success, ensuring quality AI agent experiences with low latency and high accuracy Break down large initiatives into achievable milestones Partner with Product Management to prioritize work and manage trade-offs Collaborate with Forward Deployed Engineering (FDE) teams on AI agent implementations Drive continuous improvement in development processes and team productivity Technical Leadership Perform code reviews, guide software architecture andtechnical decisions Review technical designs and ensure sound engineering practices Help teams make pragmatic technology decisions balancing innovation and reliability Drive the team to manage customer expectations of uptime and performance by defining and reviewing SLO/SLI's, developing metrics to measuring as such and maintainingfor all the services Ensure systems are scalable, maintainable, and production-ready Operational Excellence Promote strong service ownership and reliability culture Ensure effective on-call practices and incident response processes Drive root cause analysis and continuous reliability improvements Partner with SRE teams to define SLIs, SLOs, and operational metrics Handle customer escalations and issues related to AI Agent quality Participate in on-call escalation rotations for provided services Cross-Functional Collaboration Work closely with Product, UX, SRE, Forward Deployed Engineering (FDE) and Support teams Align engineering execution with product strategy and customer needs Communicate engineering progress, risks, and technical decisions clearly to stakeholders AI-Augmented Engineering Practices Use of modern AI-assisted development tools to improve engineering pro