Sr Software Engineer | Voice at five9

This role is designed for an experienced backend engineer with at least 5 years of experience who specializes in high-availability systems. While the title says "Senior," the team is looking for a hands-on developer deeply proficient in the Java and Kotlin ecosystem, specifically for building real-time communication services that require "five nines" (99.999%) uptime. The standout feature of this position is the technical challenge of the VoIP domain. You won't just be building standard CRUD apps; you’ll be working with Kafka, Debezium connectors, and Answering Machine Detection (AMD) technologies. Based in Chennai, this on-site role offers the chance to mentor junior developers while directly impacting the core infrastructure of a global cloud contact center platform. **You might be a good fit if you...** * Have mastery over Java (8 & 17) and Kotlin within a Spring Boot environment. * Are comfortable troubleshooting complex VoIP protocols and real-time data streams using Kafka. * Thrive in "mission-critical" environments where performance, scalability, and extreme reliability are the top priorities. * Enjoy a mix of new feature development and high-level technical support/escalation management.