About the role
Member of Technical Staff: iOS Engineer (Ego) Location: San Francisco, CA (hybrid) · Reports to: Founding team
About the role
Ego AI is a YC-backed applied AI research lab building the behavioral infrastructure for AI companions and agents. We work at the intersection of real-time conversational instincts, memory, and persistent identity; the layer that makes AI feel genuinely alive. We're a small, fast-moving team and we're defining a new category of human-AI interaction.
What you'll do
- Own the iOS surface for Ronin — our suite of AI agents — from design handoff to production
- Work directly with our designer and backend engineer to implement high-fidelity designs with precision and speed
- Build and maintain the core mobile experience: real-time voice interfaces, conversational flows, and agent interactions
- Ship fast, iterate with the team, and take full ownership of the mobile codebase
What we're looking for
Must have
- Shipped at least one consumer iOS app with real users
- Strong SwiftUI fundamentals and comfort owning a codebase end-to-end
- Ability to implement high-fidelity designs faithfully — pixel precision matters
- Always-ship mindset: you close loops, don't leave things in draft, and take pride in getting things out the door
Nice to have
- Experience building agentic or LLM-powered features on mobile
- Background in consumer apps — social, utility, or anything with high daily engagement
- Familiarity with real-time audio or voice interfaces
- Comfort working in a fast-moving, early-stage environment where the product is still being definedProjects this hire will own
Use AI tools freely. We do. You will walk us through the design and defend every trade-off, so own each decision in the repo.
