Lead Android Engineer - Mobile Development for FinTech

About the Role

We are looking for a Lead Android Engineer to join our team at Rain, a pioneering company in the fintech space. As a Lead Android Engineer, you will play a crucial role in shaping the future of mobile payments. This position offers the opportunity to work remotely, allowing you to contribute to our mission of making next-generation payments possible across the globe.

What You'll Do

• Own the entire Android development lifecycle, from architecture and implementation to Play Store delivery.
• Build polished, production-grade mobile apps that leverage Rain's issuance platform and APIs for clients and their end users.
• Collaborate closely with product, design, and backend engineers to define the mobile roadmap and translate platform capabilities into intuitive native experiences.
• Architect a clean, scalable codebase that can serve as the foundation as the mobile team grows.
• Integrate with Rain's APIs for card issuance, transaction management, balance queries, and other payment flows.
• Implement secure authentication, tokenization, and data handling appropriate for a financial services context.
• Drive decisions on tooling, frameworks, CI/CD, and testing strategy for mobile.
• Contribute to the broader engineering culture as an early team member with outsized influence on how we build.

Requirements

• 4–10 years of professional mobile development experience, with multiple apps shipped to the App/Play Store.
• Proficiency in Kotlin and deep familiarity with modern Android frameworks (Jetpack Compose, Coroutines, Hilt/Dagger, Room, Navigation, etc.).
• Experience architecting Android apps from scratch, making foundational decisions on project structure, navigation patterns, state management, and dependency injection.
• Solid understanding of networking layers, RESTful API integration, and secure data handling.
• A disciplined approach to code quality: you write testable code, value code review, and care about maintainability.
• Comfort working autonomously with minimal direction — you'll be the mobile expert in the room.
• Strong product sensibility: you think beyond tickets and advocate for great user experiences.
• Excellent communication skills; you can translate technical tradeoffs for non-technical stakeholders.

Nice to Have

• Experience in fintech, payments, or crypto/web3.
• Familiarity with card issuance, wallet UX, or financial transaction flows.
• Experience with WebView-based hybrid architectures or embedded SDK patterns.
• Exposure to CI/CD tooling for Android (Gradle, GitHub Actions, Bitrise, Firebase App Distribution, etc.).
• Experience with Kotlin Multiplatform (KMP) for shared business logic.
• Experience being the first or early mobile hire at a startup.

What We Offer

• Unlimited time off with a minimum requirement of 10 days.
• Flexible working arrangements to suit your productivity.
• Comprehensive health, dental, and vision plans, including life insurance.
• 401(k) plan with a 4% company match to help you plan for the future.
• Equity option plan to share in our success.
• Stipend for creating a comfortable home office atmosphere.
• Health and wellness benefits for eligible expenses.
• Team summits and offsites to strengthen relationships and build a common destiny.