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

Amazon is hiring a Software Development Engineer II, Amazon Software Builder Experience (ASBX) in Seattle, United States. It pays $144k-$194k a year and Level rates it ; you can apply on Amazon.

Level's read on this job

On Level's scale, this software engineer role is Works on AI ●●●○: the daily work is on AI products, without building the model.
The posting mentions Git, GitHub and GitLab among its tools and skills.
Level classes it as a mid-level role.
Amazon has 20,000+ other open roles on Level.

AI in this role

Builds and scales source control platforms that integrate AI agents alongside human developers as first-class participants.

GitGitHubGitLabGitfarm

ai-agentsdistributed-systemsapi-developmentsource-controlautomationcloud-infrastructure

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.

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 - 143,700.00 - 194,400.00 USD annually

How we rate this

Software Development Engineer II, Amazon Software Builder Experience (ASBX) at Amazon rates 65 out of 100 for how much of the daily work is AI. That makes it Works on AI (AI Level 3 of 4). The level is about AI in the job, not seniority.

Classification

Works on AI. The daily work is on AI products, without building the model.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Key facts

Software Development Engineer II, Amazon Software Builder Experience (ASBX) is an open job at Amazon.
Level rates this role AI Level 3 of 4: Works on AI.
The listed salary is $144k-$194k a year.
The role is based in US, WA, Seattle.
The job was posted on July 23, 2026.
Seniority: mid.
Applications are handled by Amazon. Apply on Amazon

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

AI agentsDistributed SystemsAPI DevelopmentSource ControlAutomationCloud InfrastructureGitGitHub

Also common in software engineer jobs at this level

Python AWS LLM Kubernetes TypeScript React

Pay

This job starts at: $144k
Typical software engineer job: $167k

This posting starts 14% below the typical software engineer job. See software engineer jobs

Questions you could be asked

How do you decide when an AI agent can act on its own versus asking for approval first?
Tell me about a project where distributed systems was part of your work. What did you do?
Tell me about a project where api development was part of your work. What did you do?
Tell me about a project where source control was part of your work. What did you do?
Tell me about a project where automation was part of your work. What did you do?

Adapt your resume

List these exact terms on your resume: AI agents, Distributed Systems, API Development, Source Control, and Automation. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
Show where AI is part of your daily process, not a one-off project. This role expects it to be a running habit.

Get your CV reviewed before you apply

Send your CV and the role you want next. Your review arrives by email within 3 days.

Get a free CV review Check your resume with the ATS resume checker