Zimplistic Senior Firmware Engineer interview questions

1. Phone interview with HR. 2. Online test(C language, circuit theory). Send it back to HR in 3 hours. 3. Interview with team tech lead. RTOS/control system. 4. On-site code test(C), implement device driver in C, given datasheet and code segment, and then finish the rest. 5. Chit-chat with CTO/CEO.