Software Engineer - Embedded Security & Wireless

About the role

RAFI-Group is hiring a Software Engineer in Shanghai for a full-time position focused on embedded systems, network security and wireless communication. The role combines deep knowledge of Bluetooth and Wi-Fi protocols with network security expertise.

Required profile

• Bachelor's degree or above in Computer Science, Software Engineering, Communications Engineering or a related major.
• More than 5 years of experience in network security and/or wireless communication development.
• Over 5 years of hands-on experience developing BLE/BT Bluetooth software.
• Fluent English (reading, writing and speaking).
• Experience in agricultural machinery or medical device industries is highly preferred.

Required skills

• Solid knowledge of network security engineering concepts and practical experience with MPU/MCU platforms and embedded system development.
• Proficiency in C, with a strong foundation in embedded development.
• In-depth understanding of Bluetooth core protocol specifications and all layers.
• Experience implementing Wi-Fi and LoRa protocols.
• Knowledge of IoT microcontrollers, wireless networks and OTA update mechanisms.
• Preferred: prior work with network security solutions such as TrustZone, TEE, TF-M, TPM and security software libraries.
• Ability to use Bluetooth debugging tools and troubleshoot complex software-layer issues independently.