Senior Mobile Application Developer (NFC)

Senior Mobile Application DeveloperOur 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.Key ResponsibilitiesMobile DevelopmentDesign, 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.NFC & Smart Device IntegrationDevelop NFC-enabled mobile capabilities including:Tap-to-unlock functionalityCredential provisioning and exchangeSecure credential storage and validationOffline authentication workflowsOptimize NFC functionality across multiple device manufacturers and operating systems.Troubleshoot and improve device connectivity and performance.IoT ConnectivityIntegrate 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.Security & AuthenticationImplement secure authentication and authorization mechanisms.Apply best practices for encryption, credential management, and secure storage.Ensure compliance with enterprise security standards.Cloud & Backend IntegrationIntegrate 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.Required Qualifications3+ 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 APIsCore 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 with React Native or other cross-platform mobile frameworks.Experience consuming REST APIs and integrating with cloud-based platforms.Strong understanding of mobile application architecture, performance optimization, and security best practices.Preferred ExperienceSmart lock, access control, or physical security solutionsIoT ecosystems and connected-device environmentsOffline-first mobile applicationsAWS or GCP cloud environmentsMobile security and authentication platformsEqual Opportunity Employer, including disability and protected veteran status