LVJ Soft helps organizations optimize software development and operations through practical, technology-driven solutions. The company focuses on guiding teams to embrace transformative technologies and modern engineering practices.
We're looking for a Senior Mobile Software Engineer with strong experience in React Native and Bluetooth Low Energy (BLE) to build production-grade mobile applications that communicate with embedded devices such as ESP32 and Nordic (n RF52/n RF53). You'll work closely with backend and embedded engineers to deliver reliable, scalable mobile solutions for IoT products.
Responsibilities Develop and maintain React Native applications for i OS & Android. Integrate mobile apps with REST APIs and cloud services. Implement and maintain BLE communication. Discover, pair, connect, and manage BLE devices. Collaborate with firmware and backend teams on communication protocols. Optimize app performance, battery usage, and BLE reliability. Participate in code reviews and architecture decisions. Manage App Store & Google Play releases. Requirements6+ years of professional mobile development experience.4+ years of React Native experience. Strong experience publishing and maintaining i OS & Android apps. Hands-on experience with Bluetooth Low Energy (BLE). Experience working with ESP32, Nordic (n RF52/n RF53), or similar BLE devices. Strong understanding of GATT Services & Characteristics. Experience integrating REST APIs. Familiarity with AWS or other cloud platforms. Experience with state management (Redux, Zustand, Mob X, etc.). Strong debugging and problem-solving skills. Nice to Have OTA Firmware Updates. Swift or Kotlin. Free RTOS or Zephyr. IoT platforms and device provisioning. BLE security and encryption. Low-power BLE optimization.