Senior 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 — Write shared Kotlin Multiplatform code that provides significant, testable business logic and repositories.
• Compose Multiplatform UI and Native SwiftUI — Write user interface code to utilize shared code modules.
• On-device AI — 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

• 4+ 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

Core Values

• Truth - Emphasizing transparency and honesty in every interaction and decision.
• Ownership - Taking full responsibility for one’s actions and decisions, demonstrating commitment to the success of our clients.
• Tenacity - Persisting in the face of challenges and setbacks, continually striving for excellence and improvement.
• Humility - Maintaining a respectful and learning-oriented mindset, acknowledging the strengths and contributions of others.

Benefits

• Competitive salary
• Comprehensive health, dental, and vision benefits package
• 401(k) match
• Equity options
• $200/month Health & Wellness stipend
• Continuing Education support
• $500/year Function Health subscription
• Free parking for in-office employees
• Flexible Time Off (FTO)
• Parental leave for eligible employees
• Supplemental life insurance

Benefits listed generally apply to U.S.-based employees. For employees hired outside the United States, benefits may vary based on local law, country-specific requirements, and the employment platform or entity.