Senior Realtime Backend Engineer

Job description

What you can expect You will architect high-performance C++ backend systems powering Zoom's AI-driven Contact Center platform. Working with distributed telephony infrastructure and real-time voice services, you will optimize session management and media handling at global scale. Your work will directly impact millions of customer interactions with 99.99% reliability. About the Team: We deliver cloud telephony infrastructure for Zoom's omnichannel Contact Center platform. Our team collaborates across engineering, product, and operations to build high-concurrency voice services. We exist to power seamless, AI-enhanced customer experiences at enterprise scale. Responsibilities: Designing and optimizing distributed C++ backend modules that ensure 99.99% reliability and massive scalability for real-time voice traffic Building low-latency synchronization mechanisms using Redis and distributed technologies to manage real-time call states with cross-functional engineering teams Troubleshooting complex system bottlenecks including memory leaks, thread contention, and network latency to maintain high-concurrency performance Collaborating with logic and product teams to optimize the C++/Lua b...