Senior Android Developer Washington, - DC - District of Columbia

Job Title: Android Lead Developer

Location: Washington, DC VA Maryland Area So That The Candidate Can Come To Office When Required. Hybrid Position.

Type: Contract

Skills

Android

Kotlin

Google Wallet

NFC

Maps

Job Description

Must Have TechnicalFunctional Skills:

• Strong proficiency in Kotlin, Jetpack components, Google Wallet, Google Pay, Maps, UWB, NFC.
• Experience with secure networking, offline patterns, and testing.

Roles & Responsibilities

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

Key Responsibilities:

Wallet & Payments:

• 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.
• Implement secure session establishment, peer discovery, and precise distanceangle measurement.
• Develop NFC features using HCE and ReaderWriter Mode.
• Implement NDEF readingwriting, tag interactions, and secure element usage.
• 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 CICD.

Managerial Skills:

Communication and customer interaction