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Cantina

Kotlin Multiplatform Engineer (Senior or Staff)

Cantina
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1 day ago
Remote, Worldwide +4 moreSenior / Staff+
H1B Sponsor

Base Salary

$180k - $230k/yr

Responsibilities

  • Design and build shared KMP modules for networking, data persistence, and business logic.
  • Ship production-grade Compose Multiplatform UIs that feel native on all platforms.
  • Build optimized platform-specific targets for iOS and web to meet performance standards.
  • Architect clean platform-expect/actual boundaries and maintain interop layers.
  • Set up and manage Koin Multiplatform for dependency injection across all targets.
  • Collaborate with platform teams on shared APIs and release cadences.
  • Drive KMP best practices, including tooling and CI/CD for multiplatform builds.
  • Lead development of new AI and media-driven features within the shared codebase.
  • Participate in architecture reviews to uphold high standards for module design.

Requirements

  • 8+ years of software engineering experience with expert-level Kotlin knowledge.
  • Real-world production KMP experience with shipped code on multiple platforms.
  • Hands-on experience with Compose Multiplatform for shared UI development.
  • Experience with Koin Multiplatform for dependency injection in production.
  • Solid understanding of Kotlin/Native memory model and interop with Obj-C/Swift.
  • Experience targeting Kotlin/Wasm and/or Kotlin/JS, including Compose for Web.
  • Fluency with multiplatform build tooling and CI pipelines.
  • Strong grasp of coroutines, Flow, and structured concurrency.
  • Ability to write maintainable, well-documented, and tested shared code.
  • Bonus: experience with KMP libraries like Ktor and SQLDelight.

Benefits

  • Competitive salary and generous company equity.
  • Medical, dental, and vision insurance with 99.99% of premiums covered.
  • 42 days of paid time off, including PTO, sick days, and company holidays.
  • Generous parental leave and fertility support.
  • 401(k) retirement savings plan.
  • Lifestyle spending account of $500/month.
  • Complimentary lunch and snacks for in-office employees.
  • One Medical membership and more.

Tech Stack

GradleKotlin

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