Senior Mobile Software Engineer (React Native + BLE)

About the role

LVJ Soft is seeking a Senior Mobile Software Engineer with deep expertise in React Native and Bluetooth Low Energy (BLE). You will build production‑grade iOS and Android applications that communicate with embedded devices such as ESP32 and Nordic nRF52/nRF53, supporting our IoT product portfolio.

Key responsibilities

• Develop and maintain cross‑platform React Native applications for iOS and Android.
• Integrate mobile apps with REST APIs and cloud services (e.g., AWS).
• Design, implement, and maintain BLE communication, including device discovery, pairing, connection, and GATT service handling.
• Collaborate with firmware and backend teams to define and refine communication protocols.
• Optimize app performance, battery consumption, and BLE reliability.
• Participate in code reviews, architecture decisions, and release management for App Store and Google Play.

Required profile

• 6+ years of professional mobile development experience.
• 4+ years of hands‑on React Native experience.
• Proven track record publishing and maintaining iOS and Android applications.
• Strong practical experience with BLE, GATT services, and characteristics.
• Experience working with ESP32, Nordic nRF52/nRF53 or similar BLE devices.

Required skills

• React Native
• Bluetooth Low Energy (BLE)
• iOS & Android development
• REST API integration
• AWS or other cloud platforms
• State management (Redux, Zustand, MobX)
• GATT Services & Characteristics
• Debugging and problem‑solving

What we offer

• Opportunity to work on cutting‑edge IoT mobile solutions.
• Collaboration with multidisciplinary engineering teams.
• Competitive compensation and professional growth.