Senior Software Engineer AWS RTB Fabric, AWS RTB Fabric

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 Fabrics 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 capacity planning and deployment automation.
- Work directly with ad-tech customers to debug integrations and deliver solutions meeting OpenRTB standards.
- Mentor teammates and participate in on-call for an AWS Tier 1 service where downtime directly impacts customer revenue.

A day in the life
Your morning starts with production metrics latency percentiles TLS handshake rates customer traffic across regions then into the Rust codebase tuning broker performance or validating a TLS optimization under load. After lunch you might be writing Kotlin for a new Step Functions provisioning workflow defining Smithy models for a control plane API or updating CDK stacks for a new managed endpoint type. You close the day deploying through the multi-stage pipeline canary rollout via EKS for the broker CDK-driven CloudFormation for the control plane collaborating with a tight-knit team building something that didnt exist two years ago.

About the team
RTB Fabric launched GA in October 2025 within AWS Marketplace processing millions of TPS across six regions for ad-tech customers. The platform combines a Rust broker with zero-copy hot paths and a module-chain architecture a Java/Kotlin control plane and provisioning engine on Lambda with Step Functions orchestration and cell-based multi-account infrastructure managed through CDK. We made deliberate technical bets thread-local concurrency over shared-state locking serverless orchestration over monolithic provisioning and we use AI-assisted development extensively. We want engineers energized by hard problems across the full stack who thrive in fast-paced startup-like environments.

Diverse Experiences

AWS values diverse experiences. Even if you do not meet all of the preferred qualifications and skills listed in the job description we encourage candidates to apply. If your career is just starting hasnt followed a traditional path or includes alternative experiences dont let it stop you from applying.

Why AWS

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Inclusive Team Culture

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Mentorship & Career Growth

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Work/Life Balance

We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home which is why we strive for flexibility as part of our working culture. When we feel supported in the workplace and at home theres nothing we cant achieve.

- 5 years of non-internship professional software development experience
- 5 years of programming with at least one software programming language experience
- 5 years of leading design or architecture (design patterns reliability and scaling) of new and existing systems experience
- Experience as a mentor tech lead or leading an engineering team

- 5 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience
- Bachelors degree in computer science or equivalent

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at WA Seattle - 168100.00 - 227400.00 USD annually