Staff Mobile Engineer - Kotlin Multiplatform

About the Role: We're building a flagship cross-platform application on Kotlin Multiplatform (KMP) using Compose Multiplatform as well as SwiftUI. The ideal candidate will have a proven track record of developing and deploying native mobile apps using KMP technology. Responsibilities: - Shared KMP modules — You will write shared Kotlin Multiplatform code that provides significant, testable business logic and repositories. - Compose Multiplatform UI and Native SwiftUI — You will write user interface code to utilize shared code modules. - On-device AI — You will integrate artificial intelligence frameworks both on-device and remotely. - Performance — Profile and harden app performance on real devices. Troubleshoot hard, technical bugs. - Code review and collaboration — Review human and coding-agent diffs with equal rigor, contribute to project conventions, and mentor teammates. Improve the quality of delivered code. Qualifications: - 8+ years of mobile development with shipped production apps on Android, iOS, or both - Strong Kotlin skills including coroutines and Flows. - Demonstrated interest in AI engineering - Solid experience with mobile tooling and app stores - Strong mobile product instincts Preferred Skills: - Compose Multiplatform or strong Jetpack Compose experience, including understanding recomposition stability - SwiftUI experience would be beneficial, including comfort working at the Swift/Kotlin boundary via SKIE, Swift Export, and/or hand-written interoperability code - Experience working with Rust UniFFI, C++, and JS is a plus - Contributions to open-source ML/AI or KMP libraries is a bonus We at webAI are committed to living out the core values we have put in place as the foundation on which we operate as a team. We seek individuals who exemplify the following: - Truth - Emphasizing transparency and honesty in every interaction and decision. - Ownership - Taking full responsibility for one’s actions and decisions, demonstrating commitment to the succ