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Software Engineer — Backend Platform

Better Auth · San Francisco, United States · On-site

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About Better Auth

The Most Comprehensive Authentication Framework. Backed by Peak XV and Y Combinator.

About the role

You’ll own the backend and platform development of Better Auth Infrastructure for both cloud-hosted and self-hosted deployments. That means designing and shipping new platform capabilities, making the system more reliable and performant as it scales, and driving the deployment, observability, and compliance foundations required for enterprise customers.

What they're looking for

  • Experience level — 7+ years of software engineering experience, with strong TypeScript and deep backend or infrastructure experience
  • Backend depth — you’ve designed APIs, modeled data, and shipped systems that handle real production load, you know what breaks at scale and how to get ahead of it
  • Edge/serverless experience — you’re comfortable designing and operating systems that run in edge or serverless environments and understand the runtime, observability, and architectural tradeoffs involved
  • Reliability mindset — you think about failure modes, observability, operational burden, and recovery paths when you design systems, not after the fact
  • Security fundamentals — familiarity with auth concepts like session management, token handling, access control, and common vulnerabilities, you write secure code by default, not as an afterthought
  • SOC 2 familiarity — you understand what controls, audit logging, and data handling practices are required at the implementation level, not just the audit surface
More about this role

Better Auth is the most comprehensive authentication framework for TypeScript. We're the most upvoted YC Launch in history and are used by thousands of developers shipping everything from startup projects to enterprise products.

We’re a small team building foundational infrastructure that other developers depend on, so the bar is high: every decision we make affects security, correctness, and developer experience at scale. We’re also building an enterprise layer on top of the open-source framework for teams that need more operational, organizational, and compliance-oriented capabilities.

You’ll own the backend and platform development of Better Auth Infrastructure for both cloud-hosted and self-hosted deployments. That means designing and shipping new platform capabilities, making the system more reliable and performant as it scales, and driving the deployment, observability, and compliance foundations required for enterprise customers.

Your focus will be on APIs, runtime architecture, data systems, event pipelines, edge/serverless services, and deployment models. You’ll collaborate with the product and dashboard side of the team, but your core responsibility is the infrastructure...

Read the full posting on Better Auth's site ↗

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