Since 2015, Szczepan Faber has been a Tech Lead for LinkedIn Development Tools, the team responsible for tools and workflows that ensure engineering productivity. From 2011-2015, he was core engineer of Gradle 1.x and 2.x., a leading build and automation framework. Szczepan created Mockito framework in 2007, one of the most popular Java libraries, with an estimated user base of 2 million.