Data Scientist - Product Engineering

Koah Labs is building the ad network to power the next generation of AI-native products. Our mission is to help publishers monetize and help advertisers reach the right audience — without compromising speed, UX, or privacy.

We’re a small, tight-knit team in San Francisco with backgrounds at X, Apple, Meta, and early-stage startups. We’ve raised $5.7M from top investors and are growing fast with real traction on both the publisher and advertiser sides.

Working at Koah means joining at the ground floor: you’ll ship code that shapes the company and the ecosystem we’re building. We move quickly, operate with high trust, and care deeply about craft.

Infra : Terraform, AWS, LGTM (Loki, Grafana, Tempo, Mimir), Tailscale, Cloudflare

Data : PostgreSQL, ClickHouse, Redis, Kafka, Python

Core Application : Ruby on Rails, React, TypeScript

SDKs : iOS, Android, Web, Flutter, React Native

Sit within product engineering and help drive product decisions using data and causal reasoning

Design, implement, execute experiments and analyze results

Help level-up all of engineering, encouraging data driven decisions and a deep understanding of the important metrics that drive our business forward

Use rigorous statistical thinking and hands-on modeling to turn our rich marketplace data into tools that directly shape product decisions and key insights