About Koah

Koah is building AI‑powered ad formats that work across any surface. In a chat app, a Koah ad feels like part of the conversation. On a publisher's website, it feels like editorial content. In a sidebar, a feed, an email – it adapts its layout, density, and tone to belong wherever it appears.

We're using AI to make ads better everywhere – composing the right format for the right surface with the right content in real time.

We're backed by Theory Ventures, live in AI apps serving millions of users, and we recently closed our Series A.

About the role

We're looking for a product designer to own the advertiser and publisher experiences – the creative tools, dashboards, and integration flows that make Koah work for both sides of the marketplace.

On the advertiser side, we're building toward a world where campaign agents do the heavy lifting – generating creative, selecting formats, optimising toward goals – and advertisers...