Amazon Interactive Video Service (Amazon IVS) is AWS's fully managed live streaming service, built on the same battle-tested technology that powers Twitch and trusted by thousands of enterprises across gaming, social, live commerce, sports, and entertainment.

Our mission: enable developers to build communities around live video. We handle everything from ingest to processing to delivery at global scale, so developers can focus on creating interactive, engaging live experiences for their audiences. Whether you're streaming to tens of millions of concurrent viewers or just getting started, Amazon IVS removes the complexity so developers can move fast.

As a Software Dev Engineer III, you will design and build the systems that power real-time and sub-second video distribution at massive scale. You will work deep in the stack to ensure low-latency, high-reliability delivery for millions of concurrent viewers. You'll collaborate with a team of engineers who care deeply about performance, correctness, and scale, and you'll have the opportunity to shape the architecture of next-generation streaming infrastructure.

AWS Infrastructure Services owns the design, planning, delivery, and operation of all AWS global infrastructure. In other words, we’re the people who keep the cloud running. We support all AWS data centers and all of the servers, storage, networking, power, and cooling equipment that ensure our customers have continual access to the innovation they rely on. We work on the most challenging problems, with thousands of variables impacting the supply chain — and we’re looking for talented people who want to help.

You’ll join a diverse team of software, hardware, and network engineers, supply chain specialists, security experts, operations managers, and other vital roles. You’ll collaborate with people across AWS to help us deliver the highest standards for safety and security while providing seemingly infinite capacity at the lowest possible cost for our customers. And you’ll experience an inclusive culture that welcomes bold ideas and empowers you to own them to completion.

Key job responsibilities
- Design, implement, and optimize high-performance WebRTC distribution components capable of handling millions of concurrent viewers with sub-second latency. Work at the packet level to diagnose, tune, and improve transport behavior across UDP and TCP-based protocols, ensuring optimal video quality and reliability.
- Collaborate with cross-functional teams to define and evolve the architecture of real-time media delivery infrastructure. Drive technical decisions that balance scalability, cost efficiency, and customer experience.
- Contribute to protocol design and implementation for emerging low-latency transport mechanisms, including Media over QUIC (MoQ) and other next-generation streaming protocols. Stay current with industry standards and innovations.
- Identify and resolve performance bottlenecks through profiling, experimentation, and rigorous engineering. Use data-driven approaches to optimize CPU, memory, and network utilization across distributed systems.
- Mentor junior engineers and conduct code reviews to maintain high engineering standards. Participate in on-call rotations to ensure service reliability and rapid incident response. Document architectural decisions and contribute to technical design reviews.

About the team
The IVS Real Time Video team builds and maintains Amazon Interactive Video Service's real-time streaming capabilities, enabling developers to create low-latency, interactive video experiences at scale. The team focuses on delivering sub-second latency for live video applications, supporting use cases like virtual events, live shopping, telehealth, and collaborative streaming. They work on core infrastructure, SDKs, and APIs that power real-time video communication, ensuring reliability, performance, and ease of integration for customers worldwide. The team collaborates across engineering, product, and customer success to continuously innovate and improve the real-time video experience.