Senior iOS/Android Software Engineer

About the Role We're looking for a Senior Android Software Engineer to join a small, product-focused team building a consumer fintech mobile app. You'll work closely with product, engineering, and business stakeholders to ship meaningful features that directly impact users' financial lives. What You'll Do Design, implement, and maintain the core Android application. Help build and scale platform-level architecture and infrastructure. Contribute to product design decisions and overall direction. Collaborate cross-functionally with product, engineering, and business teams. Mentor and provide technical guidance to junior Android engineers. What We're Looking For At least 5 years of mobile app development experience, with 2 or more years shipping production Android apps professionally. At least 3 years of experience working in a startup environment. Strong Kotlin expertise, including Jetpack Compose and modern architecture patterns (MVVM or Clean Architecture). Experience with backend data formats and APIs common in mobile: protobufs, REST, and gRPC . Hands-on experience integrating Firebase services, including Authentication, Firestore or Realtime Database, and Cloud Messaging. Proficiency with Android testing strategies: unit tests, instrumentation tests, and UI tests. Experience maintaining CI/CD pipelines for mobile app development. Demonstrated history of mentorship or technical leadership with junior engineers. Background building consumer-facing mobile applications (not exclusively B2B). Strong university-level CS or engineering background. Clear, effective communication and cross-functional collaboration skills. Compensation & Benefits Salary: $160,000 to $200,000 USD annually. Visa sponsorship is available. Location On-site in San Francisco, California .