3 months ago
Remote, Worldwide +4 moreSenior / Staff+
H1B Sponsor
Base Salary
$180k - $230k/yr
Responsibilities
- Design and build shared KMP modules for networking, data persistence, business logic, and domain models across Android, iOS, and WebAssembly targets
- Ship production-grade Compose Multiplatform UIs with platform-specific adaptations
- Build optimized platform-specific targets using Swift/Objective-C interoperability for iOS and Kotlin/Wasm for web
- Architect platform expect/actual boundaries and maintain Kotlin/Native and Kotlin/JS interoperability layers
- Set up and manage Koin Multiplatform dependency injection across all targets
- Collaborate with iOS, Android, and web platform teams on shared APIs, versioning, and release cadences
- Drive KMP tooling, testing strategies, and CI/CD practices for multiplatform builds
- Lead development of AI- and media-driven features in the shared codebase
- Participate in architecture reviews and uphold standards for shared module design and testability
Requirements
- 8+ years of software engineering experience with expert-level Kotlin knowledge
- Production experience shipping Kotlin Multiplatform code used on Android, iOS, and/or WebAssembly targets
- Hands-on experience building Compose Multiplatform UI across multiple targets
- Production experience with Koin Multiplatform for dependency injection
- Understanding of the Kotlin/Native memory model, freezing, and Objective-C/Swift interoperability
- Experience targeting Kotlin/Wasm and/or Kotlin/JS, including Compose for Web
- Fluency with Gradle multiplatform tooling, source sets, target configuration, and CI pipelines
- Strong understanding of coroutines, Flow, and structured concurrency across targets
- Ability to write readable, maintainable, documented, and well-tested shared code
- Bonus: production experience with KMP libraries such as Ktor or SQLDelight
- Bonus: contributions to the KMP/CMP open-source ecosystem or familiarity with JetBrains’ roadmap
Benefits
- Generous company equity
- Medical, dental, and vision insurance with 99.99% of premiums covered by Cantina
- 42 days of paid time off, including PTO, sick days, company holidays, and floating holidays
- Generous parental leave and fertility support
- 401(k) retirement savings plan
- $500-per-month lifestyle spending account
- Complimentary lunch and snacks for in-office employees
- One Medical membership
Tech Stack
Categories
Mobile
About Cantina
Cantina Labs is a social AI company, developing a suite of advanced real-time models that push the boundaries of expression, personality, and realism. We bring characters to life, transforming how people tell stories, connect, and create. We build and power ecosystems. Cantina, our flagship social AI platform, is just the beginning.