Szczepan Faber
Software Engineer at airbnb
SF Bay Area, USA, United States
Summary
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RockstarSzczepan Faber is a seasoned software engineer with 18 years of experience in the SF Bay Area focused on scaling developer productivity and building reliable commit-to-production pipelines. He combines deep backend expertise with a practical emphasis on tooling and build systems, having been a core engineer on Gradle 1.x/2.x and continuing to improve developer workflows. As creator and longtime contributor to Mockito—the most popular Java mocking framework—he has enhanced testing robustness through strict stubbing, argument matching, and JUnit integrations. Szczepan excels at turning nuanced testing and build problems into maintainable solutions and often operates at the intersection of developer ergonomics and production reliability.
18 years of coding experience
Github Skills (12)
unit-testing10
javas10
junit10
mockito10
java10
testing10
gradlew9
gradle9
error-handling9
maintenance8
code-cleanup8
api-design8
Programming languages (10)
Github contributions (5)
mockito/mockito
Nov 2007 - May 2021
Most popular Mocking framework for unit tests written in Java
Role in this project:
Back-end Developer
Back-end DeveloperContributions:123 releases, 7 reviews, 3118 commits in 13 years 8 months
Contributions summary:Szczepan primarily contributed to the Mockito library by addressing various issues and adding features. Their work included modifying tests related to Gradle builds, adding new functionality to the extension, and fixing bugs. The user's contributions touched upon core aspects of the library, including improvements to strict stubbing, argument matching, and the handling of exceptions within the JUnit runner. They focused on enhancing the overall functionality and robustness of the Mockito library.
test-automationjava-librarytestingmockitounit
linkedin/gradle-plugin-insight
Mar 2016 - Apr 2016
Contributions:71 commits in 29 days
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