Senior Software Engineer

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. As a Senior Software Engineer on the Digital Team, you will design, develop, and maintain frontend software solutions supporting Five9’s digital initiatives. This role focuses on building scalable, reliable, and high‑performance frontend applications. Our dedicated team is committed to optimising user experiences, streamlining workflows, and enhancing productivity across the board. Whether empowering agents with intuitive interfaces, empowering supervisors with powerful management tools, or enabling seamless access to critical applications via multiple platforms, we strive to deliver with utmost efficiency and customer satisfaction. You will be responsible to develop, maintain, and advance the applications and component library across Five9. Responsibilities include software design and development, testing and documentation across our React component library and applications. A passion for developing consistent, high-quality, and performant user interfaces is a necessity. The role also involves deep technical exploration of emerging technologies and partnering with product teams to bring innovative ideas into production. In addition, this position plays a key role in mentoring other engineers and driving backend engineering best practices across Five9. How You Contribute Build Reusable, Responsive, and WCAG Accessible components for our design system and web applications. Translate Figma designs into component code to align with design specifications. Maintain and Organize the Design Token system, bootloader, and codemods in collaboration with