Josh Holtz
Senior Engineering Manager at RevenueCat
Wheaton, Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolJosh Holtz is a Senior Engineering Manager with 14 years of experience leading mobile and SDK engineering, currently heading RevenueCat’s Monetization and Paywalls team. He blends hands-on native iOS/Android development with product-focused leadership, having driven core contributions to RevenueCat’s Flutter, React Native, and iOS SDKs. As lead maintainer on the fastlane project while at Google/Adecco, he helped automate and simplify iOS/Android release workflows, reflecting deep expertise in app deployment automation. Josh is pragmatic and delivery-oriented—“I build things. I ship things.”—but also skilled at evolving public APIs and integrating new platform features like StoreKit 2 and AdServices. Based in Wheaton, Illinois, he pairs startup-style full-stack ownership from his RokkinCat days with enterprise-grade process and testing rigor. Colleagues rely on him to shepherd complex SDK changes into stable, cross-platform releases that developers trust.
14 years of coding experience
13 years of employment as a software developer
Menomonee Falls High SchoolSoftware Engineering Security, Software Engineering Security at Milwaukee School of Engineering
Japanese
Stackoverflow
758reputation
20kreached
17answers
0questions
Github Skills (37)
apiconnect10
objective-c10
appstoreconnectapi10
ios10
react-native10
appstoreconnect10
flutter-apps10
google-iap10
plugin-development10
react-native-component10
fastlane10
storekit10
ruby10
automation10
android10
Programming languages (23)
Github contributions (5)
fastlane/fastlane
Jun 2021 - Dec 2022
🚀 The easiest way to automate building and releasing your iOS and Android apps
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:196 releases, 1007 reviews, 156 commits in 1 year 6 months
Contributions summary:Josh's commits primarily focus on enhancing the `fastlane/fastlane` repository by adding support for downloading dSYM files using the App Store Connect API Key and integrating features related to the `download_dsyms` action. They refactored code to use BuildBundles and removed legacy API code, improved code quality by addressing linting issues, and updated and implemented the logic within the `download_dsyms` and supporting spec files. These changes demonstrate a focus on improving the functionality and maintainability of the iOS app deployment and release automation tools.
fastlaneandroid-appsappsdeploymentreact-native
RevenueCat/react-native-purchases
Dec 2021 - Aug 2022
React Native in-app purchases and subscriptions made easy. Support for iOS and Android.
Role in this project:Mobile Developer (Android/iOS)
Mobile Developer (Android/iOS)Contributions:1 release, 42 reviews, 45 commits in 7 months
Contributions summary:Josh primarily focused on developing and improving the React Native in-app purchases and subscriptions library. Their contributions include adding a new TypeScript example for purchase testing, addressing CircleCI build issues, and fixing iOS and macOS symlink issues. They made several updates to the code and configuration, and added support for AdServices. Finally, they bumped the library to a beta release version.
stripereactin-app-purchasesreact-nativein-app-purchase
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