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# Senior Android Engineer II - Platform

- **Company:** AJAIB 495 LLC
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Multitier Architecture, Application Programming Interfaces (APIs), Android Software Development, Application Release Automation, Biometrics, Mobile Application Development, Profiling, Code Review, Continuous Integration, Gradle, Model View ViewModel, User Interface Testing, Management of Software Versions, EndPointSecurity, Backend, Kotlin, Modularization, Information Technology, Jetpack Compose, Asynchronous Programming, Programming Languages
- **Published:** November 13, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/pyvtxzc61n

## About the Role

* Education: Bachelor's degree in Computer Science or equivalent practical experience
 * Experience: 5+ years of professional mobile engineering, including building shared libraries, SDKs or tooling used by several teams in consumer Android apps with a large user base
 * Languages & Frameworks: Strong in Kotlin and the Android SDK; experience with Jetpack Compose, Coroutines/Flow and modern architecture patterns (MVVM, clean architecture)
 * Architecture & Tooling: Experience with multi-module apps, Gradle, build performance and library publishing
 * Quality: Solid experience with unit and UI testing, CI/CD, crash monitoring and performance profiling
 * Security: Working knowledge of secure storage, authentication on mobile and device security
 * Mindset: Ownership mindset, clear communication and a service attitude toward internal users. Experience in fintech or another regulated, high-traffic consumer product is a plus

## Description

As a Senior Android Engineer II in the Platform team, you build the Android foundations that every Ajaib product team builds on: the app architecture, design system, shared libraries and SDKs, secure sign-in and device security, and the build and release tooling. You own these foundations from design to release, treat other engineers as your customers, and help the engineers around you do better work.

 * Design, build and maintain shared Android foundations: app architecture, modules, design system and shared libraries
 * Own features end to end: technical design, implementation, testing, release and support for the teams that use them
 * Keep shared libraries stable: clear APIs, semantic versioning, changelogs, migration guides and safe deprecation
 * Build accessible, themeable Jetpack Compose components that product teams can adopt without custom work
 * Build and improve secure sign-in, token storage, biometric and device security features, working with backend and Security teams
 * Improve build speed, modularization, CI/CD pipelines and release automation for all Android teams
 * Set and measure quality standards, such as crash-free rate, ANR rate, startup time and app size
 * Write maintainable, well-tested code and give thoughtful code reviews
 * Investigate production issues from crash reports and feedback from product teams, and ship lasting fixes
 * Mentor mid-level engineers and share good Android practices across teams