Worked on the bullbitcoin-mobile repository to deliver PayJoin URI parsing within the Sender flow, enabling privacy-focused payment requests. The implementation involved extracting the 'pj' parameter from BIP21 URIs, converting it into a usable PayJoin endpoint, and storing this endpoint in SendState for downstream processing. This approach enhanced compatibility with PayJoin-enabled wallets and supported the app’s privacy strategy. The work was completed using Flutter and Dart, leveraging mobile development best practices to ensure seamless integration. Over the course of the month, the focus remained on building this feature, with no bugs reported or fixed, reflecting a targeted and stable contribution.