SeniorSoftwareEngineer-AWSRTBFabric

This position is part of the AWS Specialist and Partner Organization (ASP). Specialists own the end-to-end go-to-market strategy for their respective technology domains, providing the business and technical expertise to help our customers succeed. Partner teams own the strategy, recruiting, development, and growth of our key technology and consulting partners. Together they provide our customers with the expertise and scale needed to build innovative solutions for their most complex challenges. AWS RTB Fabric is looking for a Senior SDE to build and scale a real-time bidding infrastructure service processing millions of transactions per second for ad-tech customers. The platform spans a high-throughput Rust proxy broker operating under sub-100ms latency constraints, a serverless Java/Kotlin control plane and provisioning engine (Lambda, API Gateway, DynamoDB, Step Functions, CDK), and CDK-defined infrastructure across a cell-based, multi-region architecture. You will work across this stack — from Rust performance engineering to serverless workflow orchestration — leading projects end-to-end, working directly with customers, and mentoring engineers as we scale to millions of QPS. Key job responsibilities - Design and deliver features across RTB Fabric's Rust broker (millions of transactions per second), Java/Kotlin control plane, and provisioning engine, deployed across six AWS regions. - Drive broker performance and reliability: TLS optimization, adaptive concurrency, connection management, and zero-copy hot-path engineering. - Build and extend control plane APIs and Step Functions provisioning workflows that manage customer infrastructure — gateways, links, managed endpoints (EKS, ASG, ELB), VPC networking, and certificate lifecycle. - Design infrastructure-as-code using AWS CDK, including CloudFormation template generation, multi-cell deployment patterns, and cross-account resource management. - Own operational excellence: observability (CloudWatch/EMF), alarming,