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About the job

Would you like to be an engineer who builds the systems that power advertising at scale, rather than one who just operates them? Amazon Ads is dedicated to driving measurable outcomes for brands, agencies, and publishers. Within Amazon Ads, the SupplyTech organization builds and operates a suite of supply-side systems and the infrastructure that connects publisher inventory to advertiser demand. Our systems process billions of advertising queries every day, where latency, reliability, and quality translate directly into publisher revenue and customer trust.

We are looking for a Senior System Development Engineer, operating as a Site Reliability Engineer, to raise the reliability bar for SupplyTech's most critical, high-throughput production systems. This is a senior individual-contributor role that blends deep software engineering with operational ownership: you will design and build the automation, tooling, and self-healing systems that keep supply-side services reliable at massive scale — and you will set the reliability strategy that multiple teams build against.

You will own and monitor service-level objectives for business-critical systems, lead the engineering response to complex, high-severity issues and drive systemic elimination of operational toil. You will influence the operability of new services before they launch and act as a force multiplier.

Key job responsibilities Own the reliability, availability, and performance of business-critical PubTech services end-to-end — including SLO/SLA definition, error budgets, and the operational roadmap.

- Design and build automation frameworks, tooling, and self-healing mechanisms (primarily in Python, Java, or Go) that eliminate entire classes of operational toil across teams. - Lead root-cause analysis for complex, high-severity incidents across the ad-serving pipeline; implement durable long-term fixes and drive correction-of-error (COE) processes to prevent recurrence.

- Design and implement scalable monitoring, alarming, telemetry, and diagnostic solutions for complex distributed systems operating under real-time latency constraints.

- Define and drive operational readiness reviews for new services and features, embedding reliability, observability, and operability standards before launch. - Partner with software development teams to build a durable runbook and knowledge base.

- Mentor and develop engineers — including other senior ICs — raising the technical and operational bar through design reviews, code reviews, and coaching. - Experience leading the design, automation, deployment, and support of large-scale infrastructure - Experience programming with at least one modern language such as Python, Ruby, Golang, Java, C++, C#, Rust - Experience with Linux/Unix - Experience with CI/CD pipelines build processes - Experience with distributed systems at scale

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 https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t 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 https://amazon.jobs/en/benefits .

USA, WA, SEATTLE - 151,200.00 - 204,600.00 USD annually