Software Developer Engineer
US$111,000 – US$231,500 / yr base salary
Posted 27 Aug 2026
Advertised as “Fullstack Software Dev Engineer II”
BranchFactor Summary
The original posting with the fluff stripped out
- Level
- II
- Expected experience
- 4–6 yrs
- Management level
- Individual contributor
- Contract
- Full-time
| Base salary | US$111,000 – US$231,500 / yr |
|---|
CertificationsBachelor of Science
Field of studyComputer Science (or related)
Study levelBachelor's
It takes powerful technology to connect our brands and partners with an audience of hundreds of millions of people. Whether you’re looking to write mobile app code, engineer the servers behind our massive ad tech stacks, or develop algorithms to help us process trillions of data points a day, what you do here will have a huge impact on our business—and the world.
About the Team
Identity platforms at Yahoo provide modern, secure identity offerings for consumers and businesses interacting with Yahoo systems. These platforms operate at massive scale, serving hundreds of millions of users every day, and power critical authentication, authorization, and account management capabilities across Yahoo products.
As part of Yahoo’s transition to an AI-First engineering model, teams increasingly leverage AI-assisted development environments (e.g., Cursor, Claude Code, GitHub Copilot) combined with Spec-Driven Development (SDD) workflows, to accelerate delivery while maintaining high engineering quality.
About the Role
We are looking for a Full Stack Software Dev Engineer II to join our Identity organization. You will work across the stack to build secure, scalable, and user-friendly authentication and account management experiences that serve hundreds of millions of users globally.
In this role, you will work independently with minimal guidance, owning critical features and acting as a technical resource for your peers. A core expectation is the ability to collaborate effectively with AI systems—using structured specs, deep codebase context, and prompt modeling to guide high-quality software implementation. We seek engineers who possess an experimentation-forward mindset and view AI as a force multiplier for architectural excellence and team-wide productivity.
Responsibilities
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Design, build, and operate secure, scalable full-stack identity systems using ReactJS, TypeScript, Java, and Node.js.
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Own complex features and standalone project phases end-to-end, from gathering requirements and systems design to implementation, testing, and production.
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Lead an AI-first development workflow within the squad, writing precise markdown specifications to drive AI-assisted code generation (Cursor, Claude Code), and taking responsibility for the rigorous validation, testing, and safety of all generated assets.
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Identify system bottlenecks, enhance platform reliability, and debug complex production issues in our high-traffic distributed identity systems.
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Proactively research and implement AI-driven efficiencies in your daily coding workflows, replacing repetitive manual tasks with structured automation, custom templates, and AI-assisted testing.