Firmware Engineer

Position Summary, Responsibilities and Expectations:

• Design, implement, and maintain embedded firmware for HID devices based on ARM Cortex-M and RISC-V platform
• Develop USB HID, BLE HID, and 2.4Ghz proprietary HID protocols.
• Collaborate with hardware engineers to define MCU selection, pin mapping, and schematic validation.
• Implement firmware update mechanisms(e.g., DFU over USB) and bootloader spport.
• Implement and control RGB LED lighting effects, include animations, brightness control, and synchronization with host software.
• Develop firmware for driving and update LCD displays, include UI rendering, menu navigation, and real-time data display.
• Conduct performance tuning, code optimization, and power efficiency improvements.
• Write and maintain clean, modular, and reusable code in C or C++
• Work closely with manufacturer to define test strategies and automate validation where applicable.
• Maintain documentation for firmware architecture, APIs, and versioning

Essential Skills and Experience:

Required Qualifications:
• Bachelor’s degree in Electrical Engineering, Computer Engineering, or related field.
• 2+ years of experience in embedded firmware development for Cortex-M, RISC-V or similar MCUs.
• Proficiency in C/C++ and real-time embedded systems development.
• Familiarity with communication Interface/protocol such as USB, SPI, I2C, Proprietary 2.4G and BLE. 
• Proficient with debugging tools such as JTAG/SWD, oscilloscopes, and protocol analyzers (USB, BLE, RF)
Preferred Qualifications:
• Knowledge of USB-IF certification process and HID descriptor design.
• Experience with CI/CD for embedded systems (e.g., Jenkins, GitLab CI).
• Familiarity with power profiling tools and energy-aware design.