Kryštof Woldřich
Software Engineer at Expo
Vienna, Austria
Summary
🤩
Rockstar🎓
Top SchoolKryštof Woldřich is a software engineer with 7 years of experience, currently building developer tools at Expo in Vienna after contributing deeply to Sentry’s SDK ecosystem. He brings full-stack expertise across JavaScript, React Native, Android and backend JVM tooling, having implemented performance tracing, screenshot capture, and native integrations in flagship projects like sentry-react-native and sentry-javascript. His work on upstream React Native (Turbo Modules, codegen and improved error reporting) shows a strong focus on bridging native and JS boundaries and improving developer ergonomics. Interested in IoT systems design, he combines HCI-informed thinking from graduate studies with practical production experience shipping cross-platform diagnostics and developer-facing features. A detail-oriented contributor, he often tackles native-level changes that enable higher-level tracing and observability features used by millions of users.
7 years of coding experience
6 years of employment as a software developer
Exchange studies Software Engineering, Exchange studies Software Engineering at Metropolia University of Applied Sciences120 ETC Master Credits (without degree) Human Computer Interaction, 120 ETC Master Credits (without degree) Human Computer Interaction at Czech Technical University in Prague
Stackoverflow
96reputation
2kreached
6answers
0questions
Github Skills (46)
webbrowser10
monitoring10
javascript10
ios10
react-native10
mobile-development10
tracer10
es6-promise10
typescript10
browser10
java10
codegen10
javas10
sdk10
performance-optimization10
Programming languages (17)
Github contributions (5)
getsentry/sentry-react-native
Sep 2022 - Jan 2023
Official Sentry SDK for React Native
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:1050 reviews, 136 commits, 1308 PRs in 4 months
Contributions summary:Kryštof primarily focused on enhancing the React Native SDK for React Native applications, by implementing new features related to performance. Their work included adding transaction sources and metadata to improve tracing functionality within React Navigation integrations. The user also contributed to the implementation of screenshots functionality, which involved significant modifications to the native code to integrate with screenshot capture and attachment functionalities. Furthermore, they were involved in integrating modules collectors and various bug fixes in the areas of HTTP Client errors and app hang timeout.
reactsentryreact-nativejavascriptsentry-sdk
getsentry/sentry-java
Nov 2022 - Jan 2023
A Sentry SDK for Java, Android and other JVM languages.
Role in this project:Back-end Developer
Back-end DeveloperContributions:39 reviews, 28 commits, 34 PRs in 2 months
Contributions summary:Kryštof's contributions primarily revolved around enhancing the Sentry SDK for Java, specifically focusing on Android core functionalities. They implemented features related to screenshots and their integration with hybrid SDKs, including the ability to take and attach screenshots to events. Additionally, they exposed and refactored the screenshot processing logic, allowing its use in hybrid SDKs, and optimized the codebase.
sentrylog4j2java-androidsentry-sdktimber
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