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      Firmware Engineer Interview

      13 Apr 2026
      Anonymous interview candidate
      San Francisco, CA
      No offer
      Positive experience
      Average interview

      Application

      I applied through other source. I interviewed at Ampersand (San Francisco, CA)

      Interview

      Data struct for storing 32 bit sensor data in 64 bit data section of CAN data struct. Data is a 8 byte array. Asked where would you store the data type. How to prevent data corruption with mutex. Follow up had Khz producer and consumer tasks and how to synchronize and process data. Not enough time in tasks so do it in a slower process after collecting data in larger volume.

      Interview questions [1]

      Question 1

      How to bit shift 32 bit value into an array.
      Answer question

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