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Software Engineer - Data / ML

United States, San Francisco 180000.00 - 250000.00 USD / Year · Job Posted February 18, 2026
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Job Description

At Koah Labs, we believe in rewarding world-class talent with highly competitive compensation. Our approach ensures that every team member is recognized and incentivized for their impact with a comprehensive package that includes a strong base salary, meaningful equity, and top-tier benefits. We are committed to providing an environment where our people are empowered to do their best work, knowing their skills and contributions are valued and rewarded accordingly. 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 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.

Job Responsibility

  • Build data pipelines using Debezium to stream real-time changes from PostgreSQL to our OLAP database for analytics workloads
  • Reduce p99 latency in critical write paths by optimizing SQL query execution plans, implementing robust retry mechanisms, and enforcing strict timeouts for third-party services
  • Tune conversion and clickthrough rate metrics in our core ad matcher from analyzing impression and click data
  • Enhance ad matching algorithms using regression analysis to identify data patterns and develop hypotheses for new predictive features that improve conversion likelihood
  • Set up experiment tracking and observability with logs and custom metrics that make it easy for us to understand why certain ads are chosen

Requirements

  • You like debugging and optimizing performance
  • You are detail oriented and use data to support your claims
  • You enjoy digging deeply and owning the platform side supporting product
  • You enjoy experimentation, measuring, and creating reliable systems

What we offer

  • Offers Equity
  • top-tier benefits

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