Case Study: Open Listings achieves scalable CI, 100,000+ tests/day and faster releases with CircleCI

How Open Listings shipped a re-brand with CircleCI

Open Listings is a startup that simplifies homebuying with a feature-rich web platform serving ~1M monthly visitors. Their product required extensive automated testing—unit, API, end-to-end browser, and front-end JS tests running in Docker—to protect complex property pages and business logic. As the engineering team grew quickly (3 to 8 people) and they prepared a full site redesign and rebrand, their existing CI lacked stability and scale, putting releases and user experience at risk.

Switching to CircleCI gave them stable, scalable CI with parallel test runs, Docker support, and Mac-based mobile testing, cutting build time and reducing environment-related failures. The team eliminated much CI overhead and redundant meetings, shipped the redesign without disruption, and now runs 100,000+ tests per day while accelerating feature velocity, improving onboarding, and boosting engineering morale.

Open Listings

Alex Farrill

Chief Technical Officer