Android Developer

Required Technical Skills

1. Kotlin and Android Development

• Strong proficiency in Kotlin, Java, and Android SDK.
• Hands-on experience with Android Jetpack components, including ViewModel, LiveData, Room, WorkManager, and Navigation.
• Strong understanding of Kotlin Coroutines and Flow.
• Experience with dependency injection using Hilt/Dagger.

2. API Integration and Communication

• Hands-on experience integrating REST APIs, JSON, HTTPS/TLS, authentication, and secure API communication.
• Experience with socket programming, TCP/IP, and WebSockets for real-time communication and device-to-server connectivity.

3. Database and Offline Capabilities

• Experience with local Android data storage using Room or equivalent technologies.
• Experience with offline-first applications, transaction synchronization, retry mechanisms, and transaction recovery.

4. Security

• Understanding of data encryption, certificate management, secure key exchange, JWT, OAuth 2.0, and application security.

5. Hardware and Device Integration

• Familiarity with hardware communication interfaces, including USB, Serial, Bluetooth, and vendor-specific SDKs.
• Knowledge of NFC, EMV card reading, ISO 14443, and contactless smart-card technologies is a strong advantage.

6. Development Tools and Support

• Familiarity with Git, CI/CD, Docker, application deployment, debugging, logging, and production support.

Preferred Domain Experience

Experience in any of the following domains will be highly advantageous:

• Automatic Fare Collection (AFC)
• Metro/Rail and Public Transport
• NCMC and EMV
• QR ticketing
• POS and payment processing