Idan Gozlan focused on improving build reliability for the getsentry/sentry-react-native repository by addressing a critical environment configuration issue. He fixed a bug in the Sentry Build Plugin that caused environment variables to load incorrectly during React Native Expo builds. By updating the JavaScript build scripting in expo-upload-sourcemaps.js to reference the correct .env.sentry-build-plugin file, Idan ensured that environment variables were sourced accurately, preventing build failures in CI workflows. His work centered on build scripting and environment configuration, contributing to more stable sourcemap uploads and smoother integration with Sentry. The solution demonstrated careful attention to detail and practical engineering depth.