Sebastian Scatularo contributed to both the XLabs/portal-bridge-ui and wormhole-foundation/wormhole-connect repositories, focusing on user-facing features and system reliability. He enabled an in-progress widget in the Connect UI by adjusting development build configurations, laying groundwork for progress indicators. To improve API reliability, he implemented a 1.5-second timeout guard for Wormhole Scan API calls and enhanced error handling for chain sorting, ensuring stability during AbortError events. Sebastian also updated portal dependencies for compatibility and customized WalletConnect RPCs to support more reliable wallet interactions. His work leveraged TypeScript, React Hooks, and API integration, demonstrating solid full stack engineering depth.