Couple of years experiences of commercial software product development
C/C++ on Windows or Linux or Swift/OC on OS X is a must-have
Experiences in major development platforms (Windows, Linux, 
OS X, etc.) and being across platforms is a plus
Experience on monitoring of CPU, memory, storage, NIC etc. is highly preferred
Being familiar with Win32API/POSIX API is highly preferred
Being familiar with protobuf, restful, etc. is a plus
Demonstrated ability to understand and solve deep technical issues
Debugging skills, good at gdb, WinDBG or similar