Staff AI Builder (AI Native Mobile Engineer), Family AI Lab

Life360 is a company dedicated to keeping families connected through innovative technology. The role of Staff AI Builder involves transforming rough ideas into tangible products quickly, collaborating with design and product teams to create AI-powered solutions that enhance user experience.

Responsibilities:

• Take rough ideas (sketches, voice memos, half-finished docs) and turn them into something real and clickable, fast. The first version is usually the same day
• Build prototypes for the surfaces that make the product tangible: the map, widgets, Live Activities, voice, in-app moments where information surfaces automatically. Some will ship. Most will get thrown away. Both outcomes are useful
• Make tasteful UI calls without waiting for design to spec every pixel. Design refines. You get it 80% there
• Sit in the room when product direction gets debated. Push back when something doesn't feel right. We need engineers who are part of the conversation, not waiting for the output
• Use AI tooling aggressively. Orchestrate agents to generate code, write tests, and review your work. The whole point of this team is that a small group with the right tools outperforms a much larger one
• Ship to test groups, watch how people actually use what you built, iterate. The feedback loop is short and you are inside it

Requirements:

• Deep experience building consumer mobile or web products that real people use
• Zero-to-one stage experience and the desire to do it again
• Taste. You can articulate why one design works and another doesn't
• You can move from a blank screen to a working prototype without anyone holding your hand
• Deep in at least one of React, Swift, or Kotlin — and comfortable shipping in another
• AI-native in your daily workflow
• Hands-on with Claude Code, Cursor, or equivalent
• Deep experience with agentic workflows, prompt engineering, context window management, MCP / function calling
• Self-starter energy
• Ability to operate without a spec
• Ability to ship every day (or close to it)
• Ability to push for more and demand excellence
• Ability to hold strong opinions and change them when the evidence moves
• Ability to push back and concede fast when wrong
• Experience as a customer of what we build
• Map-based or location-driven product work