Remote Kotlin Android SDK Engineer - Contract (3-4 months)

Offshore 24/7; United States; Remote; USD 83,000 - 165,000; Part time

Job summary

Offshore 24/7 is seeking a seasoned Android SDK developer to design, package and validate a reusable Kotlin SDK for mobile apps. You will implement secure auth, REST integrations for nutrition and AI features, and deliver clear documentation for teammates and third-party integrators.

The contract runs 3–4 months with fully remote work from home. You will join an established Australian business and collaborate with product teams to ensure production-ready release.

Qualifications

• At least 5 years of native Android development with Kotlin.
• Experience building Android SDKs or libraries, not only apps.
• Gradle, AAR packaging and SDK distribution.
• Token-based authentication, session management and secure storage on Android.
• Jetpack Compose and/or Android Views.
• Android architecture, modularisation and dependency management.

Responsibilities

• Design and build a modular, reusable Android SDK in Kotlin that host apps can embed.
• Define the SDK interfaces and reusable native UI components host apps integrate against.
• Integrate REST APIs behind nutrition, meal-planning and AI-powered features, handling networking, error states and performance.
• Build secure authentication: token management, session handling, secure storage and user sync.
• Package, version and distribute the SDK with Gradle and AAR.
• Integrate and validate the SDK inside an existing production Android app.
• Write the integration documentation and support testing through to production release.

Skills

Kotlin

Android SDK

Gradle & AAR

Jetpack Compose

Coroutines & Flow

Networking APIs

Testing

Debugging

Modular architecture

Independent work

Tools

Gradle

Android Studio

Job description

Offshore 24/7 is seeking a seasoned Android SDK developer to design, package and validate a reusable Kotlin SDK for mobile apps. You will implement secure auth, REST integrations for nutrition and AI features, and deliver clear documentation for teammates and third-party integrators.

The contract runs 3–4 months with fully remote work from home. You will join an established Australian business and collaborate with product teams to ensure production-ready release.