Software Engineer

Revyl is an AI-enabled QA platform that allows teams to create, run, and maintain fully functional, automated E2E tests easily with no maintenance.

Location: San Francisco, CA, US
Company size: 5–10
Posted: Today
Via: Yc

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Software Engineer · Revyl

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Job title: Software Engineer
Job location: San Francisco, CA, US
Job listing URL: https://www.ycombinator.com/companies/revyl/jobs/E3sb54p-software-engineer
Job description: **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

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