Founding Product Engineer
About the Role
Join a small product engineering team building a consumer AI assistant. As the founding product engineer, you will own the agent and user experience end to end, shaping how the assistant reasons, communicates, and takes action.
What You'll Do
Build the agent decision-making layer, including tool-calling loops, memory, context assembly, prompts, and model routing.
Create evaluation infrastructure with conversation replay, turn-level judges, and regression suites to help assess product quality before releases.
Own product experiences across mobile and web, from onboarding and initial interactions to follow-ups, group conversations, and approvals.
Ship features from idea through experimentation and release, using feedback and product data to guide priorities.
Develop integrations with email, calendars, bookings, payments, and browser automation, including reliable tool use and user approval flows.
Review conversations, speak with users regularly, and help establish engineering practices and grow the team.
What We're Looking For
At least 4 years of software engineering experience, i
