Software Engineer

What you'd work on

• The AI agent loop. Our agents observe device screens, ground actions to UI elements, execute steps, and reflect on whether they worked. It's a capture-ground-execute-reflect cycle and there are a lot of hard problems in making it reliable
• Distributed workflow orchestration for test execution across pools of devices
• Device infrastructure for Android and iOS. Emulators, real devices, streaming, automation
• Our CLI that ties local dev to cloud verification. Build uploads, live device sessions, CI integration
• OpenTelemetry integration, trace correlation, and the tooling we use to debug executions
• Real-time execution UX. WebSocket streaming, live device views, graph-based test visualization
• Building out product surface (CLI, web app, CI integrations)

What we're looking for

• High customer empathy. You think about the user's problem when you're designing a technical solution, not just the technical elegance
• You enjoy novel problems with real technical and product ambiguity
• You've built and scaled systems that run in production under real load
• Practical experience with LLMs, AI infra, or agent-based systems
• Track record of high ownership and autonomous execution
• Strong communication

Experience that would stand out

• Mobile build tooling experience (Swift, Kotlin, Flutter)
• Mobile testing infrastructure, device automation, or mobile platform tooling
• OpenTelemetry or distributed tracing
• Workflow orchestration systems
• CLI or developer tooling
• Probably not a fit if

You want well-scoped tickets

• You're uncomfortable making architectural decisions without full information
• You prefer deep specialization in one layer over working across a full stack
• Why join?
• Hard technical problems (AI agents, distributed systems, mobile device infrastructure) not CRUD apps
• Shape technical and product direction from the ground floor
• Flat hierarchy, high ownership, full autonomy
• Small, talent-dense founding team in San Francisco
• Competitive compensation and equity