Android Developers

Role Name:

Android Developer (12+ Years) Location:

Washington DC/Virginia/Maryland Job type: Contract Job Description:

Must Have Technical/Functional Skills:

• 8+ years of Android development experience.
• Strong proficiency in Kotlin, Jetpack components, Google Wallet, Google Pay, Maps, UWB, NFC.
• Experience with secure networking, offline patterns, and testing.

Roles & Responsibilities

Role Summary:

We are seeking a highly skilled Android Developer with deep hands-on experience in building digital wallet,

payment, location-based, and proximity interaction features using UWB and NFC technologies. Key Responsibilities:

Wallet & Payments:

• Implement Google Wallet integrations including passes, offers, loyalty cards, transit passes, and identity flows.
• Develop Google Pay payment flows including payment tokenization, merchant validation, and secure transaction handling.
• Integrate with payment gateways and implement validation, error handling, and reconciliation.
• Develop mapping features using Google Maps SDK and Location Services API.
• Implement geofencing, background location tracking, and fused location optimization.
• Build custom map layers, clustering, markers, and real-time route visualizations.
• Build device-to-device ranging and proximity-aware experiences using Android Nearby UWB APIs.
• Implement secure session establishment, peer discovery, and precise distance/angle measurement.
• Develop NFC features using HCE and Reader/Writer Mode.
• Implement NDEF reading/writing, tag interactions, and secure element usage.

General Android Engineering:

• Write modular Kotlin code using MVVM or Clean Architecture.
• Build reusable components and secure, efficient features.
• Apply accessibility, performance optimization, and robust error handling.
• BLE experience.
• Knowledge of tokenization, PCI compliance, and secure payment flow design.
• Experience with modular apps, analytics, crash reporting, and CI/CD.

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