Zach Klippenstein
Staff Android Engineer at Block
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolZach Klippenstein is a Staff Android Engineer based in San Francisco with 11 years of experience building mobile platforms at Block, Google, Square, and Amazon. He specializes in Android UI and Compose work—shipping production text-input, accessibility, and gesture features in AndroidX—and has a strong track record of improving composable UI frameworks (notably contributing to Square’s workflow and workflow-kotlin projects). Comfortable iterating on both product apps and foundational libraries, he combines pragmatic engineering with thoughtful refactors and documentation improvements. Formerly an engineering manager at Square, he pairs hands-on coding with mentorship and cross-team collaboration. An early open-source contributor to key mobile tooling, he brings deep product experience on payments and merchant apps alongside low-level UI expertise.
11 years of coding experience
13 years of employment as a software developer
B.C.Sc.(Hons.) Computer Science Honours with Co-op Linguistics minor, B.C.Sc.(Hons.) Computer Science Honours with Co-op Linguistics minor at University of Manitoba
French
Stackoverflow
66reputation
2kreached
3answers
0questions
Github Skills (17)
kotlin10
ios10
android-test10
user-interface10
android-developer10
uid10
front-end-development10
android10
android-developers10
mobile10
android-ui10
android-testing10
ui-design9
documentation6
android-jetpack-compose6
Programming languages (12)
Github contributions (5)
square/workflow
Nov 2018 - Nov 2020
A Swift and Kotlin library for making composable state machines, and UIs driven by those state machines.
Role in this project:
Mobile Developer
Mobile DeveloperContributions:16 releases, 6 reviews, 1050 commits in 1 year 11 months
Contributions summary:Zach is primarily focused on adding and enhancing UI elements, and is actively modifying the project's UI framework to introduce various mobile features, such as support for button-based actions, touch gesture support. The majority of the work revolves around modifications of classes related to rendering for mobile platforms.
kotlin-librarystate-machinesmachinesandroidkotlin
square/workflow-kotlin
Apr 2020 - May 2022
A Swift and Kotlin library for making composable state machines, and UIs driven by those state machines.
Role in this project:Front-end Developer
Front-end DeveloperContributions:13 releases, 352 reviews, 441 commits in 2 years 1 month
Contributions summary:Zach's commits primarily focused on UI-related tasks within the workflow-kotlin project. They removed non-Kotlin files and README text. Furthermore, the user refactored the codebase, renaming "VeryExperimentalWorkflow" to "ExperimentalWorkflow" and removing deprecated functions. The user also made documentation improvements.
kotlin-librarystate-machinesmachinesandroidkotlin
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