Android Developer Needed for Production In-App Purchase Flow

Ridgeline Software

Freelance · Remote · Flexible hours

About the role

We are launching an integration project that ties our billing system, CRM, and several internal APIs into a seamless Android experience. The freelancer will craft the glue code, ensure data consistency, and deliver a reliable client that respects user privacy.

Key responsibilities

• Design and implement Kotlin modules that consume billing, CRM, and internal REST endpoints.
• Create a robust data synchronization layer with conflict resolution.
• Build UI components for payment status and customer insights while following Material Design.
• Write unit and instrumentation tests to guarantee integration stability.
• Collaborate with backend engineers to refine API contracts and error handling.

Must-have skills

• Strong Kotlin and Android SDK expertise.
• Proven experience integrating multiple external APIs.
• Solid understanding of Retrofit/OkHttp, Coroutines, and Jetpack libraries.
• Ability to write clean, maintainable code with test coverage.

Nice to have

• Familiarity with billing platforms (e.g., Stripe, Braintree).
• Experience with CRM systems like Salesforce or HubSpot.
• Knowledge of CI/CD pipelines for Android (Fastlane, Bitrise).