flight engineer
aircraft flight crew position responsible for operating engines and other systems onboard an aircraft
en-GB/ˈflaɪt ˌɛnd͡ʒɪˈnɪə/
en-US/ˈflaɪt ˈɛnd͡ʒəˈnɪɹ/
aircraft flight crew position responsible for operating engines and other systems onboard an aircraft