Tim Van Der Lippe
Architect Advisor API-standards at Mockito
Netherlands
Summary
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Rockstar🎓
Top SchoolTim Van Der Lippe is an architect and advisor specializing in API standards for government organisations, with 11 years of software engineering experience across companies like Adyen and Google. He has led large-scale tooling and build-system improvements—most notably reducing Adyen's mono-repo build times and time-to-merge through an "Isolated Builds" strategy—while mentoring engineering teams on code hygiene and collaboration. A core maintainer of Mockito, he brings deep Java expertise and contributions that improve test reliability and developer ergonomics, and his ErrorProne work helped enforce safer Java use across projects. At Google he improved Chrome DevTools’ architecture, build and testing infrastructure and migrated editor and UI components, demonstrating a knack for modernizing complex front-end systems. Active in open source across high-profile projects (Chrome DevTools, Polymer, web.dev) he combines hands-on implementation with long-term architectural vision. Based in the Netherlands, he blends pragmatic engineering, stewardship of widely used developer tools, and a persistent focus on developer experience.
11 years of coding experience
7 years of employment as a software developer
6VWO geslaagd NT/NG, 6VWO geslaagd NT/NG at Da Vinci college KagerstraatMaster of Science - MS Computer Science, Master of Science - MS Computer Science at Delft University of Technology
English, Dutch
Stackoverflow
748reputation
90kreached
20answers
1question
Github Skills (55)
search-engine10
javascript10
static-analysis10
testing10
css10
polymer10
typescript10
user-interface10
web-components10
templater10
template-engine10
webpages10
ui-design10
python-templates10
html-template10
Programming languages (24)
Github contributions (5)
ChromeDevTools/devtools-frontend
Jul 2019 - Mar 2022
The Chrome DevTools UI
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1618 commits, 2 pushes, 2 comments in 2 years 7 months
Contributions summary:Tim's contributions focused on refactoring and porting the existing DevTools code to the CodeMirror 6 editor. They made changes to several components within the `ui/legacy` folder to adapt to the new editor, including the implementation of features such as autocompletion and inline editing support. Furthermore, the user addressed multiple regressions and improved styling across the panel by migrating CSS files to adopt the new theme. The changes show active participation in maintaining the front-end codebase.
instrumentationreactjavascriptchromecdp
mockito/mockito
Jun 2015 - Dec 2022
Most popular Mocking framework for unit tests written in Java
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:33 releases, 456 reviews, 236 commits in 7 years 7 months
Contributions summary:Tim primarily contributed to fixing bugs and improving the functionality of the Mockito framework. Their work involved addressing issues in annotation processing, argument matching, and exception handling, leading to more robust test execution and improved error messages. The user demonstrated expertise in Java by modifying the core code and implementing new features. These changes improved the overall reliability and usability of the mocking framework.
test-automationjava-librarytestingmockitounit
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