Senior Mobile Application Developer (NFC)

Overview Our client•Atlanta, GA

About The Position

Our client is seeking a Senior Mobile Application Developer to build and enhance next-generation smart access solutions. This role is focused on developing mobile applications that communicate with connected devices using NFC, Bluetooth Low Energy (BLE), and cloud-based services. The ideal candidate has strong mobile development experience, a background in hardware-integrated applications, and expertise building secure, highly available mobile solutions that function in both online and offline environments.

Requirements

3+ years of mobile application development experience using Android (Kotlin) and/or iOS (Swift).
3+ years of hands-on experience with NFC technologies and frameworks: Android NFC APIs, Core NFC (iOS).
3+ years of experience with Bluetooth Low Energy (BLE).
3+ years of experience developing applications that integrate with IoT devices or physical hardware.
Experience consuming REST APIs and integrating with cloud-based platforms.
Strong understanding of mobile application architecture, performance optimization, and security best practices.

Nice To Haves

Experience with React Native or other cross-platform mobile frameworks.
Smart lock, access control, or physical security solutions.
IoT ecosystems and connected-device environments.
Offline-first mobile applications.
AWS or GCP cloud environments.
Mobile security and authentication platforms.

Responsibilities

Design, develop, and maintain high-performance Android (Kotlin) and/or iOS (Swift) applications.
Build scalable, secure, and user-friendly mobile experiences for smart lock and access-control solutions.
Ensure consistency in application architecture, performance, and user experience across platforms.
Develop NFC-enabled mobile capabilities including: Tap-to-unlock functionality, Credential provisioning and exchange, Secure credential storage and validation, Offline authentication workflows.
Optimize NFC functionality across multiple device manufacturers and operating systems.
Troubleshoot and improve device connectivity and performance.
Integrate mobile applications with connected IoT devices.
Implement NFC and BLE communication strategies, including fallback mechanisms.
Support reliable operation in low-connectivity and offline-use scenarios.
Implement secure authentication and authorization mechanisms.
Apply best practices for encryption, credential management, and secure storage.
Ensure compliance with enterprise security standards.
Integrate mobile applications with REST APIs and cloud services (AWS/GCP).
Collaborate with backend engineers to design mobile-first APIs and workflows.
Support synchronization of device status, activity logs, permissions, and user access controls.