Senior Mobile Engineer, Kotlin and Cross-Platform
Senior mobile engineer building and releasing cross-platform features across Android and iOS, with particular depth in Kotlin and Kotlin Multiplatform. The role requires production experience beyond a primary platform, mobile architecture leadership, backend collaboration, automated quality practices, and responsible use of AI coding agents.
About the job
Responsibilities
- Design, build, and ship features across iOS and Android apps, including required backend changes.
- Own releases from code cut through app-store submission on both platforms.
- Extend release automation to reduce manual effort and catch issues before release.
- Build tests, instrumentation, and review gates that enable high-quality releases without a manual QA pass.
- Drive mobile architecture decisions through adoption across the engineering team.
- Collaborate with product and design on feature prioritization and product decisions.
- Use coding agents where they provide leverage, and improve the associated tools, guardrails, and workflows.
Requirements
- Production experience with Kotlin Multiplatform, including shipping shared KMP code or determining appropriate shared boundaries.
- Production code shipped outside the primary platform within the last two years, including iOS, backend, or web; experience shipping on both iOS and Android is a strong plus.
- Experience leading a significant mobile architecture or platform change from proposal through adoption.
- Familiarity with APIs, entitlements, and analytics, and the ability to implement the services needed by mobile features.
- Strong quality practices with automation as the default and deliberate use of device testing.
- Active experience using AI coding agents, including evaluating their output and establishing appropriate trust boundaries.
- Clear written and verbal communication, including effective pull requests and design notes.
- Pragmatic judgment when balancing delivery speed and quality.
Nice-to-haves
- Compose Multiplatform.
- CallKit or the Android telecom framework.
- CarPlay, Android Auto, watchOS, or Wear OS companion experiences.
- In-app subscription platforms such as RevenueCat.
- Mobile CI/CD and release tooling such as Bitrise or Runway.
Compensation and benefits
- Annual base salary: $170,000–$228,000.
- Equity compensation aligned with impact and company growth.
- Learning and development budget.
- Internal mobility opportunities.
Skills
Kotlin, Kotlin Multiplatform, Android, iOS, Swift, Compose Multiplatform, APIs, Analytics, Mobile Ci/Cd, Bitrise, Runway, Callkit, Revenuecat, Ai Coding Agents
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