Software Engineer, Core Services

Our mission is to automate coding. The first step in our journey is to build the best tool for professional programmers, using a combination of inventive research, design, and engineering. Our organization is very flat, and our team is small and talent dense. We particularly like people who are truth-seeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code.

About the Role

As a Software Engineer on the Core Services team at [hidden], you'll own the critical shared services that sit between our product surfaces and the infrastructure layer: auth, webhooks, and the backend systems that power agent workflows.

[hidden] is redefining how developers write code, and your work is what makes that possible at scale. You'll build the systems that every product team depends on, ensuring they are reliable, well-abstracted, and ready for whatever comes next.

Example projects include...

• Owning authentication: designing and implementing a scalable auth architecture that secures one of the most widely-used developer tools in the world.

• Powering the agent backend: owning the infrastructure behind [hidden]'s agent workflows, optimizing for end-to-end performance and reliability as agents become central to the developer experience.

• Building a robust webhook server: handling high-throughput event delivery with proper retry semantics, dead-letter queues, and observability so external integrations just work.

• Hardening SCM integrations: building resilient abstractions over source control providers so [hidden] stays rock-solid regardless of third-party conditions.

• Driving end-to-end agent reliability: partnering with the client and inference teams to improve the full path from user action to agent response, closing the loop on one of the hardest problems in AI-powered development.

You may be a fit if

• You have experience building and operating critical backend services, especially auth systems, API gateways, or webhook infrastructure.

• You've worked on agentic products or infrastructure and have strong opinions on reliability and performance of complex multi-step systems.

• You care deeply about clean abstractions, well-defined service contracts, and making it easy for other engineers to build on top of your work.

• You have strong software engineering fundamentals and enjoy owning the full lifecycle of production services.

• Experience with authentication/authorization frameworks (OAuth, JWTs, RBAC), event-driven architectures, or building developer-facing platform services is a plus.

Applying

If there appears to be a fit, we'll reach out to schedule 2-3 short technicals. After, we'll schedule an onsite in our office, where you'll work on a small project, discuss ideas, and meet the team.

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