Android Developer

Android Developer

Location: Washington DC, Virginia, Maryland (Hybrid)

Duration: 6+ months

Rate: $90/hr.

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.

Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.