Worked on the bugsnag/bugsnag-js and bugsnag/bugsnag-js-performance repositories to enhance cross-platform stability and build reliability for React Native projects. Focused on modernizing the Android build pipeline by upgrading to React Native 0.84, aligning Node.js versions, and improving device ID validation. Refactored plugin instantiation to match updated React Native practices and expanded error handling tests to cover more scenarios, including metadata modification in error callbacks. Extended plugin compatibility with additional web API event targets, supporting broader integration. Leveraged JavaScript, Node.js, and CI/CD tools to deliver four new features and resolve two bugs, strengthening both testing and deployment workflows.