Case Study: Karat achieves rapid improvement in dev productivity with CircleCI

Karat improves velocity even as pipelines get complex

Karat, the leader in Interview Engineering, faced frequent downtime and heavy maintenance with its self-hosted Jenkins setup, which slowed development, testing, and code shipping for its interview platform and datasets. The team needed a more reliable way to support growing engineering productivity and reduce interruptions.

Karat chose CircleCI to replace Jenkins and streamline its testing workflows. With CircleCI, the team saw an immediate productivity boost, merged code about eight times a day with 17 developers, and reduced the maintenance burden from roughly half an engineer day per week—potentially saving the equivalent of a couple of full-time developers. CircleCI also improved build speed through Docker layer caching and made onboarding easier, helping Karat scale engineering work with more confidence.

Karat

Aram Greenman

Software Engineer