Software Engineer - Backend

Koah Labs

• $120K — $160K *
San Francisco, CA 94112In-Person
Information Technology
Less than 5 years of experience
Today
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Job Overview by Ladders

Qualifications

  • 5-7 years of experience in software development
  • Proficiency in Ruby on Rails, React, and TypeScript
  • Strong background with AWS and infrastructure as code using Terraform
  • Experience with data handling using PostgreSQL and Kafka
  • Familiarity with mobile SDK development for Android and iOS

Responsibilities

  • Build scalable data models to optimize ad request functionalities
  • Design and implement new engagement tracking formats
  • Develop a low-latency system for ad frequency control
  • Create effective schemas for high-volume ad bidding
  • Collaborate with teams to ensure systems are reliable and efficient

Benefits

  • Flexible working hours
  • Professional development opportunities
  • Collaborative team environment
  • Access to cutting-edge technologies
  • Health and wellness programs
Full Job Description
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


Example projects
  • Build scalable data models that support multiple impressions for an ad request allowing us to align publisher and advertiser interests
  • Design abstractions that allow us to experiment and ship new formats that allow for a flexible way of tracking engagement events
  • Build a low-latency frequency capping system to improve an end user's experience and prevent ad fatigue
  • Create schemas to represent high-volume ad bidding with ad exchanges to increase the diversity of the ad demand on platform

You might be a fit if
  • You like debugging and optimizing performance
  • You are detail oriented and like to create good abstractions that others rely on
  • You enjoy experimentation, measuring, and creating reliable systems
* Ladders Estimates

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