Firmware Engineer (Shenzhen)

Join our engineering team to develop production-ready firmware for multiple product lines, including audio, Bluetooth, Wi-Fi devices, embedded Linux platforms, and low-power MCU systems. You will work closely with hardware, product, and manufacturing teams throughout the full product lifecycle, from design to release.

Firmware design and implementation
You will design and implement robust and efficient firmware in C/C++ (including lower-level programming where required) for embedded systems based on microcontrollers and microprocessors. You will also work on both bare-metal platforms and RTOS or OS-based systems, including FreeRTOS, Zephyr, and embedded Linux, depending on product requirements.

Embedded systems and feature development
You will develop and maintain firmware components such as bootloaders, power-management modules, inter-processor communication, peripheral drivers (SPI, I2C, UART, I2S, Ethernet), audio and data interfaces, and firmware upgrade mechanisms.

Participation in the full product lifecycle
You will participate in the complete product development lifecycle, including architecture and design, board bring-up, hardware checkout, signal and hardware validation, debugging, system integration, and preparation for final product release.

Cross-functional collaboration
You will work closely with hardware, test, project management, product, and manufacturing teams to define requirements, ensure proper firmware and hardware integration, and deliver stable, production-ready solutions.

Debugging and performance optimization
You will perform firmware debugging, root-cause analysis, and tuning for performance, power consumption, and resource constraints. You will also use tools such as oscilloscopes, logic analyzers, JTAG (or equivalent), and other low-level debugging instruments for signal validation and troubleshooting.

Documentation and code quality
You will write and maintain technical documentation, including firmware specifications, design documents, integration guides, release notes, and test and validation results. You will also participate in code reviews, follow coding standards and best practices, and contribute to firmware architecture and design decisions, particularly for complex or multi-processor systems.

Knowledge sharing and mentoring
You will share best practices, contribute to the continuous improvement of firmware development processes, and mentor junior firmware engineers when applicable.

• Hold a Bachelor’s degree or higher in electrical engineering, computer engineering, computer science, or a related field
• Have 5–7+ years of hands-on experience in embedded firmware development for consumer electronics or embedded systems
• Are proficient in C and C++, with experience in low-level and register-level programming
• Have experience with at least one (preferably several) of the following domains: Audio / Bluetooth SoCs (Qualcomm QCC, Airoha, BES, Realtek, or similar), embedded Linux platforms (ARM-based SoCs, wireless gateways, smart speakers, connectivity systems), MCU/RTOS low-power systems (ARM Cortex-M, IoT devices, wearables)
• Have practical experience with RTOS (FreeRTOS, Zephyr) and/or embedded Linux environments
• Understand hardware interfaces and communication protocols such as SPI, I2C, UART, I2S, Ethernet, and related peripherals
• Have strong low-level debugging skills, including hardware bring-up and validation using oscilloscopes, logic analyzers, and JTAG
• Can read and interpret hardware schematics and work effectively on HW/SW integration issues
• Follow good documentation practices and are comfortable maintaining design specs, source code, release notes, and version control
• Demonstrate strong analytical and problem-solving skills, with attention to performance, power, and resource constraints
• Communicate effectively and work well with cross-functional teams
• Are fluent in Chinese and English
• Are based in Shenzhen or Guangzhou, China

Please submit your CV in English