Android Engineer - Privacy & Security, Kotlin Multiplatform

RealDefense, LLC; Los Angeles (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

RealDefense, LLC is building privacy and security apps for Android and iOS, with Kotlin Multiplatform and native code. You will join a small, hands-on team, owning features across platforms, reporting to the head of mobile who mentors the team and guides architecture.

You’ll grow skills in Android, iOS, and Kotlin Multiplatform while taking on more ownership as the platform expands. The role emphasizes contributing end-to-end on Android, from idea to production, with a focus on privacy and

Qualifications

• CS degree or equivalent practical experience and 1+ year Android Kotlin experience.
• At least one app shipped to Google Play with end-to-end walkthrough.
• Strong Kotlin, coroutines and Jetpack Compose fundamentals: ability to write, test and debug a feature with tests.
• Experience with AI coding agents daily and ability to plan, review and test outputs.
• Willingness to learn Kotlin Multiplatform and to work in Xcode/Swift for shared code on iOS.
• Based in the Los Angeles area and able to work from our office 3 days a week.

Responsibilities

• Build Android privacy and security features deep in the platform.
• Build subscriptions and accounts with Google Play Billing.
• Build shared Kotlin Multiplatform and Compose Multiplatform code for Android and iOS, and review both iOS and Android code.
• Own features in production: Play Console releases, policy reviews, crash and log triage, performance and battery tuning.
• Work with AI coding agents every day: plan the work, keep each step small and tested, review what the agent writes.
• Write a short plan before you build and keep it current as the work changes.

Skills

Kotlin

Coroutines

Jetpack Compose

Android development

Kotlin Multiplatform

AI coding agents

Education

CS degree or equivalent

Tools

Google Play Billing

Job description

RealDefense, LLC is building privacy and security apps for Android and iOS, with Kotlin Multiplatform and native code. You will join a small, hands-on team, owning features across platforms, reporting to the head of mobile who mentors the team and guides architecture.

You’ll grow skills in Android, iOS, and Kotlin Multiplatform while taking on more ownership as the platform expands. The role emphasizes contributing end-to-end on Android, from idea to production, with a focus on privacy and