Software Engineer - Data / ML jobs in United States
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Koah · 3 months ago

Software Engineer - Data / ML

positionSan Francisco
timeFull-time
remoteOnsite
seniorityEntry, Mid Level
money$180K/yr - $300K/yr

Koah Labs is building the ad network to power the next generation of AI-native products. They are seeking a Software Engineer to help deliver ads quickly, track performance accurately, and scale the platform as they grow.

AdvertisingAdvertising PlatformsArtificial Intelligence (AI)Sales

Responsibilities

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

Qualification

PostgreSQLRuby on RailsAWSTypeScriptData pipelinesDebuggingPerformance optimizationExperimentation

Required

Experience with data pipelines and streaming technologies such as Debezium
Strong understanding of SQL and experience optimizing SQL query execution plans
Experience with PostgreSQL and OLAP databases
Ability to analyze data patterns and develop hypotheses for predictive features
Experience with performance debugging and optimization
Detail-oriented with a data-driven approach
Experience in building reliable systems and conducting experiments
Familiarity with ad matching algorithms and metrics tuning

Preferred

Experience with AWS services such as RDS and S3
Familiarity with Grafana for metrics and logs
Experience with Ruby on Rails, React, and TypeScript
Knowledge of caching and rate limiting using Redis
Experience with mobile SDKs such as Flutter, React Native, Android (Kotlin, Compose), and iOS (Swift)

Company

Koah

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Koah is the GenAI Ad Network: Publishers can monetize AI chat without compromising UX — and advertisers can reach high-intent users with 1:1 engagement inside GenAI environments.
dateFounded in 2024
location
San Francisco, California, USA
people-size2-10 employees
web-link
https://www.koahlabs.com/

Funding

Current Stage
Early Stage
Total Funding
$5M
Key Investors
Forerunner
2025-09-07Seed· $5M
2024-01-01Pre Seed
Company data provided by crunchbase