Software Dev Engineer, Amazon CloudFront (Routing Dataplane)

Do you wonder what happens in the milliseconds between a user clicking play and content appearing on their screen? Do you want to build the systems that make that possible - at global scale, processing millions of requests per second?

Amazon CloudFront is looking for an experienced Software Development Engineer to join our Routing Dataplane team in Seattle,

USA. CloudFront is one of the world"s largest content delivery networks. Working on systems with global scale is a daily part of the job. We build

reliable, scalable, low-cost systems that serve our ever-growing customer base. We are constantly shipping features that drive innovation in the

CDN market. The environment is fast-paced, collaborative, and full of hard problems worth solving.

This role sits at the intersection of distributed systems, networking, and performance engineering. You will work on systems that operate at global scale processing millions of requests per second and delivering content with high availability, low latency, and strong security guarantees. You will build and optimize critical dataplane components including layer 4 packet processing, TCP/IP stack enhancements, DDoS detection and mitigation, and Anycast-based routing systems.

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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 and build high-performance networking systems that operate in the CloudFront edge network
• Develop and optimize layer 4 packet processing pipelines for ultra-low latency and high throughput
• Enhance TCP/IP stack behavior for performance, congestion control, and resilience at scale
• Build systems for real-time DDoS detection, mitigation, and traffic shaping
• Design and evolve Anycast routing strategies to improve global traffic distribution and availability
• Own critical dataplane services end-to-end: design, implementation, deployment, and operations
• Analyze large-scale network telemetry to identify performance bottlenecks and failure modes
• Drive operational excellence, including monitoring, alerting, and rapid incident response
• Contribute to architectural decisions that influence global traffic engineering strategies

A day in the life

You will work on systems that operate at massive global scale, solving complex problems in networking, distributed systems, and real-time traffic

engineering. You will analyze network telemetry data to find and fix performance bottlenecks, ship improvements to packet processing pipelines,

and collaborate with teams across AWS to influence how content is delivered, secured, and optimized across the internet.