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Berkeley Heights, NJ, USA

Posted On: 8 days ago

Experience: 5+ years

Availability: Onsite

Openings: 1

Category: Android developer

Tenure: Contract - Corp-to-Corp

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Develop and maintain high-quality Android applications for payments and financial services.
Collaborate with product managers, designers, and backend engineers to deliver secure, scalable solutions.
Integrate payment gateways, UPI, card networks, wallets, and third-party SDKs with robust error handling.
Implement application security: Android Keystore, encryption, authentication/authorization, root detection.
Ensure code quality through unit/UI tests (JUnit/Espresso), code reviews, and CI pipelines.
Optimize performance: memory management, profiling, network efficiency, and offline-first capabilities.
Contribute to technical architecture; mentor junior developers; manage Play Store releases.
Stay current with Android Jetpack, Kotlin coroutines/Flow, Compose, and Clean Architecture.

Skills & Proficiency Levels

Skills	Things to Check During Interview
Kotlin, Java	Strong command of Kotlin and Java; experience with Android SDK, Jetpack components, Compose.
Payment Integration	Integration with payment gateways (UPI, cards, wallets); awareness of PCI DSS and industry regulations.
RESTful APIs & Networking	Retrofit/OkHttp; secure data transmission (TLS/pinning); error handling and retries.
App Security	Android Keystore; encryption; OAuth2/JWT; device binding and root detection awareness.
Architecture & Patterns	MVVM/Clean Architecture; dependency injection (Hilt/Dagger); modularization; SOLID.
Unit/UI Testing	JUnit/Espresso; test coverage strategies; CI integration.
Play Store Deployment	App signing; certificates; Play Console workflows and release management.
Performance Optimization	Profiling (Android Profiler); memory/performance tuning; startup/network/render optimization