Software Development Engineer II, Amazon Software Builder Experience (ASBX)

The Code Services team in Amazon Software Builder Experience (ASBX) owns all source control at Amazon — GitFarm, GitHub, and GitLab. Amazon builds on our platforms — literally. Millions of repositories, hundreds of thousands of production systems, and every AI agent writing code at Amazon today push changes to infrastructure we own and operate. We're looking for a Senior Software Development Engineer to own and drive the architecture, design, and delivery of systems that operate at massive scale. You'll define technical direction for ambiguous problem spaces, lead design across multiple workstreams, and mentor engineers — all while shaping how the next generation of builders, both human and AI, interact with source control at Amazon.Key job responsibilities- Own end-to-end design, architecture, and delivery of source control infrastructure serving millions of repositories and billions of monthly code operations across Amazon.- Lead technical design and drive architectural decisions for highly available services supporting GitFarm, GitHub Enterprise, and GitLab — platforms that cannot go down.- Define and build APIs and platform capabilities that enable AI agents and automated systems to interact with source control safely and at scale.- Identify and drive technical investments that improve platform scalability, reliability, and developer experience across the source control ecosystem.- Drive operational excellence — set the bar for on-call, reduce operational toil through automation, and advance our AI-native operations approach.- Influence technical direction across ASBX to deliver a unified, secure developer experience across all source control platforms.- Mentor and grow engineers on the team, raising the technical bar through design reviews, code reviews, and hands-on guidance.A day in the lifeAs an SDE III on Code Services, you own technical direction for systems every Amazon developer depends on. You define approaches for ambiguous problems — whether that's architecting how AI agents safely interact with source control at scale, designing GitLab's integration into Amazon's infrastructure, or solving monorepo performance challenges that break assumptions baked into git itself. You influence across multiple workstreams, mentor engineers, and set the technical bar for the team — all while shipping production systems with the highest standards for availability and performance.About the teamThe Code Services team owns all source control at Amazon — GitFarm, GitHub, and GitLab. Millions of repositories, billions of monthly code operations, and hundreds of thousands of production systems depend on our platforms. We manage Amazon's external open-source presence on GitHub and operate one of the largest GitLab installations in the world. We are an AI-native team — our operations agent resolves the majority of customer issues autonomously and self-improves over time. We ship fast, operate with high standards, and build for the agentic developer era.Basic qualifications- 3+ years of non-internship professional software development experience- 2+ years of non-internship design or architecture (design patterns, reliability and scaling) of new and existing systems experience- 1+ years of software development engineer or related occupational experience- 1+ years of designing and developing large-scale, multi-tiered, multi-threaded, embedded or distributed software applications, tools, systems, and services using: C#, C++, Java, or Perl experience- 1+ years of Object Oriented Design experience- Bachelor's degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field- Experience programming with at least one software programming languagePreferred qualification - 3+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience- Bachelor's degree in computer science or equivalentAmazon 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 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 .USA, WA, Seattle - 143,700.00 - 194,400.00 USD annually