Founding Product Engineer

About the Role This is a founding-level engineering role at an early-stage AI consumer startup building an ambient intelligence product that spans phone, watch, and desktop. You'll own the full product surface — from UX and UI through to the underlying AI agent and speech recognition pipeline — working directly alongside the Head of Product to ship fast and iterate on real user feedback. What You'll Do Own features end-to-end across mobile, wearable, desktop, and the agent/ASR pipeline beneath them. Translate lightweight briefs and Slack threads into shipped product with minimal specification. Make independent trade-offs across UX, UI, backend, and AI/ML based on what each feature actually needs. Drive improvements to ASR latency and accuracy, wearable reliability, cross-platform detection, and agent responsiveness. Take features from design through ship through iteration, closing the loop on user feedback without waiting for direction. Partner closely with Product and Design to prioritize and execute the roadmap. What We're Looking For 2+ years of full-time experience shipping consumer features end-to-end across mobile, desktop, wearable, or backend platforms. Genuine capability across at least two of: mobile, desktop, wearable, and backend — with shipped work to show for it. Founding or early-stage startup engineering experience (pre-Series B or equivalent scale). Full-stack product development ability — comfortable making UX, UI, backend, and AI/ML trade-offs independently. Experience building real-time or streaming systems requiring low-latency or continuous data pipelines. Strong product sense: knows what's worth building and can execute without detailed specs. Nice to have: iOS/watchOS or wearable development; speech, audio, or ASR ML pipeline experience; AI-native or LLM-powered consumer app work; agent/agentic workflow implementation; hardware-adjacent startup background. Compensation & Benefits Salary: $200,000 USD annually. Visa sponsorship is not available. Location Hybrid — San Francisco, CA, United States.