Sr. Staff Mobile Software Engineer

Earnin-posted 2 months ago
$279,000 - $341,000/Yr
Full-time • Senior
Hybrid • Mountain View, CA
251-500 employees
Publishing Industries
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We're on a mission to reinvent the financial system and make it work for people. We are seeking passionate and resourceful engineers to join our mobile development teams. You will have the opportunity to make a meaningful impact with your technical contributions and influence how people think about money. As a Senior Staff Mobile Engineer at EarnIn, you will work cross-functionally with various teams and will have the opportunity to contribute to the design and development of our services and both new and legacy products.

  • Define, evolve, and advocate for a scalable, modular, and maintainable native mobile architecture across iOS and Android.
  • Lead by example with code and architecture spikes in both platforms.
  • Leverage Kotlin Multiplatform (KMP) where it makes sense, guiding adoption strategy and avoiding pitfalls of over-abstraction.
  • Partner with multiple product engineering teams to ensure mobile features are implemented with architectural integrity while balancing speed and business outcomes.
  • Uplift mobile engineers across teams by evangelizing design patterns, clean code practices, testing strategies, and performance optimization.
  • Drive architecture conversations across several ongoing initiatives simultaneously without losing depth or rigor.
  • Proactively identify bottlenecks, tech debt, and long-term risks; propose solutions that scale with user growth and product expansion.
  • Jump in quickly to bring clarity, untangle existing architectural challenges, and unlock velocity for ongoing product initiatives.
  • 8+ years of professional experience in native mobile development with deep expertise in both iOS and Android.
  • Demonstrated track record of delivering large-scale, complex mobile applications used by millions.
  • Deep knowledge of mobile architecture design patterns (MVC, MVP, MVVM, MVI, Clean Architecture, etc.).
  • Proficiency in Swift, SwiftUI, Objective-C (legacy), Kotlin, Jetpack Compose, and Java (legacy).
  • Solid understanding of cross-platform approaches, including KMP (must have some hands-on experience).
  • Strong grasp of API design, modularization, dependency management, CI/CD, release strategies, and mobile DevOps pipelines.
  • Experience in influencing and aligning multiple product engineering teams on architecture decisions.
  • Strong communication and leadership skills; ability to explain complex architecture trade-offs to technical and non-technical stakeholders.
  • Experience in modernizing legacy codebases and leading large refactoring efforts.
  • Exposure to mobile security best practices and handling of sensitive data.
  • Familiarity with mobile analytics, crash reporting, feature flagging, and experimentation platforms.
  • Experience in fintech, regulated industries, or high-scale consumer applications.
  • Base salary range of $279,000 to $341,000, plus equity and benefits.
  • Hybrid position requiring in-person work from Mountain View HQ 2+ days a week.
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