Paperpile is developing a new version of their mobile apps for iOS and Android, focusing on creating the best experience for researchers to collect, read and annotate scientific articles on mobile devices. The role involves working with React Native and developing native modules for advanced functions such as background file downloads, inter-app communication, and data sharing. A key responsibility includes integrating and extending the native PSPDFkit-based PDF viewer on both Android and iOS platforms. As a Senior Mobile Engineer, you'll be part of a remote-first company that values independence, clean code, and efficient delivery. The position offers comprehensive benefits including learning opportunities, flexible work arrangements, and equity participation. This is an excellent opportunity for experienced mobile developers who want to contribute to scientific research tools while working with cutting-edge mobile technologies.