Job Details

Senior Product Engineer - AI

  2026-04-03     Zest Search     San Mateo,CA  
Description:

Senior AI Product Engineer

Seed-stage AI startup | San Francisco

$225K–$300K + equity

On-site 5 days a week

The opportunity

This is a chance to join an AI-native product at real inflection point, going from zero to thousands of users in weeks and now growing 30–50% week over week through word of mouth, with strong daily engagement and retention.

The company has raised $18M in seed funding and is building a proactive AI assistant that actually does work for users rather than just responding to prompts.

The founding team has scaled products from $10M to $300M+ ARR and previously built and exited companies to Dropbox and Google.

What you'll do

  • Own and ship user-facing features end-to-end across the full stack, from idea ? launch ? iteration
  • Drive product thinking, working closely with founders, design, and customers to shape what gets built
  • Build AI-powered experiences used daily by real users
  • Operate in fast feedback loops, shipping quickly and iterating based on usage
  • Take high ownership over product quality, direction, and execution

What they're looking for

  • 4+ years building and shipping products, ideally in early-stage or high-growth startups
  • Proven experience owning features in production with real users
  • Strong product intuition combined with full-stack capability
  • Comfortable using AI-native tools to move faster and build more efficiently
  • Thrives in high-ownership environments with speed, ambiguity, and minimal structure

Why join

  • You'll be joining a small, high-calibre team at an early but already proven stage, with real traction, strong compensation and meaningful equity, and the opportunity to play a defining role in how people interact with AI on a daily basis.


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