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

Amazon Web Services (AWS); Seattle (WA); On-site; USD 144,000 - 194,000; Full time

Job summary

Amazon Development Center U.S., Inc. in Seattle seeks a Software Development Engineer to build and scale platforms where all Amazon code lives, as AI agents join human developers in source control.

You will design and deliver massive-scale systems, collaborate with GitFarm, GitHub, and GitLab teams, and mentor junior engineers while maintaining high reliability and secure developer experience.

Qualifications

• 3+ years of non-internship professional software development experience.
• Experience in design or architecture of large-scale systems.
• Experience with multi-tier, distributed software applications and OO design.

Responsibilities

• Design, build, and operate source control infrastructure serving millions of repositories.
• Deliver scalable, highly available services for GitFarm, GitHub Enterprise, and GitLab.
• Build APIs and platform capabilities for AI agents and automated systems.
• Own on-call duties and drive automation to reduce toil and improve reliability.
• Collaborate across ASBX to deliver a unified developer experience for source control.
• Address monorepo scaling, high-throughput git operations, and cross-platform consistency.

Skills

Software development

System design

OO design

Distributed systems

C/C++/Java/Perl

Education

Bachelor's degree in CS/Engineering/Math

Job description

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 Software Development Engineer to build and scale the platforms where all Amazon code lives, at a time when AI agents are becoming first-class participants in source control alongside human developers. You'll design and deliver systems that operate at massive scale while shipping features that shape how the next generation of builders — both human and AI — interact with code.

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 Software Development Engineer to build and scale the platforms where all Amazon code lives, at a time when AI agents are becoming first-class participants in source control alongside human developers. You'll design and deliver systems that operate at massive scale while shipping features that shape how the next generation of builders — both human and AI — interact with code.

Key job responsibilities

• Design, build, and operate source control infrastructure serving millions of repositories and billions of monthly code operations across Amazon.
• Deliver scalable, highly available services that support GitFarm, GitHub Enterprise, and GitLab — platforms that have >4 nines of availability.
• Build APIs and platform capabilities that enable AI agents and automated systems to interact with source control safely and at scale.
• Drive operational excellence — own on-call, reduce operational toil through automation, and contribute to our AI-native operations approach.
• Collaborate with engineers across ASBX to deliver a unified, secure developer experience across all source control platforms.
• Solve hard distributed systems problems — monorepo scaling, high-throughput git operations, cross-platform consistency, and performance at Amazon scale.
• Contribute to technical design, code reviews, and mentoring of junior engineers.

A day in the life

As an SDE II on Code Services, you design and build systems that every Amazon developer depends on. You might spend the morning optimizing git operations for monorepo performance, then shift to building APIs that AI agents use to interact with source control. You collaborate with teammates across GitFarm, GitHub, and GitLab to deliver features and resolve operational issues. Your customers are literally all of Amazon — from principal engineers to AI coding assistants. You balance shipping new capabilities with operating infrastructure that is always available.

About The Team

The 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 language

Preferred Qualifications

• 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 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 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.

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 - 143,700.00 - 194,400.00 USD annually

Company - Amazon Development Center U.S., Inc.

Job ID: A10482768