Senior Software Engineer at five9

This role is designed for a seasoned Full-Stack Engineer with a strong background in both modern front-end frameworks and robust back-end architecture. The ideal candidate has significant experience with the React ecosystem, Java Spring Boot, and Microservices. Since this is a senior position, Five9 is looking for someone who can bridge the gap between technical execution and mentorship, ensuring high-quality code through peer reviews and architectural guidance. A standout aspect of this position is the opportunity to work on "Core Applications" that handle massive scale, such as Agent Desktops and Freedom Application Platforms. While the role is on-site in Chennai, you will be part of a global cloud leader in the Contact Center (CCaaS) space. You’ll gain exposure to high-availability systems, Google Cloud Platform, and Kubernetes, with a clear path toward technical leadership within a team-first culture. **You might be a good fit if you...** * Are highly proficient in TypeScript, React, and Java (Spring Boot). * Have a solid grasp of REST API design and database management (SQL, NoSQL, and Redis). * Enjoy a "full-stack" lifestyle—comfortable shifting from UI performance to back-end microservices. * Are willing to participate in an on-call rotation to ensure the reliability of global services.