Founding Product Engineer

Pally is a personal assistant that lives in text messages and helps users handle everyday tasks such as replying to messages, booking dinners, and chasing invoices. The Founding Product Engineer will own the AI agent and user experience, building production agents, evaluations, integrations, and product features while shipping improvements and measuring user engagement.

Responsibilities:

• The agent. Design and build how Pally decides to act, ask, wait, or reach out first: the tool-calling loop, memory and context assembly, prompts, and model routing so small, fast models take most turns and frontier models take the ones that matter
• Evaluations. Build the harness that turns “did that reply feel right?” into a number: turn-level judges, replay of real conversations, regression suites that run before every deploy
• The experience. How Pally reads on a phone, from the first reply to a follow-up weeks later. Onboarding, group chats, teams, approvals, and the web app. The first five minutes decide whether someone texts Pally again
• Product features. Own features end to end, from idea to the moment a user texts us that they love it. Run experiments behind feature flags, keep what works, and delete what doesn’t
• Integrations. Email, calendar, bookings, payments, and browser sessions for sites with no API. Tools the model calls correctly and recovers from, OAuth that works over a text message, and approval flows so Pally never spends money people didn’t agree to
• Talking to users. Read transcripts every day, talk to users every week, and study the numbers. What you learn decides what you build next