Case Study: Teamleader achieves 90% test coverage and 12X faster test creation with mabl

Teamleader takes a whole-team approach to testing by integrating automated mabl tests into the entire development lifecycle

Teamleader, a Ghent-based software company serving 65,000+ users, was deploying code 6–7 times per day but struggling with brittle, time-consuming Selenium tests that pulled developers away from new feature work. To democratize testing across the development lifecycle they evaluated tools and selected mabl, a scriptless, AI- and cloud-powered test automation solution, to replace their unreliable Selenium framework.

mabl was implemented to enable whole-team, automated testing throughout the dev cycle, bringing features like auto-healing, parallel execution, and a SaaS infrastructure that removed maintenance overhead. The switch drove measurable impact: test coverage rose from 0% to 90%, test creation became roughly 12X faster (from ~4 hours to ~20 minutes), tests became stable and trustworthy, and Teamleader gained faster, higher-quality releases while reducing testing costs and hiring pressure — all enabled by mabl.

Teamleader

Thomas Noë

QA Architect