Founding Product Engineer (Design + Frontend)

Build a personal AI agent from first concept to shipped product. You will own product design and frontend implementation across web and iOS, working directly with the founder and a small technical team in Warsaw. This is a 0-to-1 role.

You will define how users interact with an AI agent, design the product experience, and build the interfaces yourself. The product is not fully specified, so you will make product decisions, test quickly, and ship working versions.

Translate early ideas into user flows, prototypes, and high-fidelity Figma designs. Implement production web interfaces with TypeScript, React, and Next.js. Design and build interfaces that make agent behavior understandable: what the agent is doing, what input it needs, what it has done, and what requires user approval.

Define flows for starting tasks, reviewing agent actions, correcting mistakes, and approving sensitive actions. Contribute to the iOS app using SwiftUI. Establish the first component library, interaction patterns, visual system, and frontend conventions.

Handle real product states: loading, empty states, errors, partial results, unclear AI output, and long-running actions. Work with the founder and engineers on product decisions, technical trade-offs, and shipping priorities.

Production experience shipping TypeScript, React, and Next.js applications. Strong product design ability in Figma, including user flows and high-fidelity UI. At least one shipped product or feature