Who We AreKoah 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 of the marketplace.
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.
Our Stack- Infra: Terraform, AWS, LGTM (Loki, Grafana, Tempo, Mimir), Tailscale, Cloudflare
- Data: PostgreSQL, ClickHouse, Redis, Kafka, Python
- Core Application: Ruby on Rails, React, TypeScript
- SDKs: Flutter, React Native, Android, iOS
In this role, you will:- Help shape the foundation of our engineering organization
- Lead initiatives across the stack, with high agency in product direction and technical design
- Dive deeply into technically challenging and rewarding work, whether it is optimizing our matching algorithms or creating world class experiences that reach millions of users
- Partner with cross functional stakeholders in data and GTM to drive product direction that our customers need
- Embrace an experimentation mindset - we are constantly trying to learn about how users are interacting with AI-native products, and use data from these experiments to drive our work.
You might thrive in this role if you:- Have experience building and scaling production quality systems and experiences
- Are comfortable working across the stack, tackling new tasks out of your comfort zone, and can handle ambiguity
- Work well in-person and enjoy fast feedback loops
- Enjoy breaking down problems and testing your hypotheses
- Get excited about end-to-end ownership within high agency environments
- Have been a startup founder or an early-stage engineer
