Earlier quoted context omitted.
probably: 1. strong fundamentals of L2/L3 networking 2. software defined networking state of the art 3. linux and windows virtualization state of the art 4. distributed storage state of the art 5. familiarity with commodity 64 bit hardware of all varieties (supermicro, dell, hp, etc.) 6. kernel debugging skills (maybe not development) 7. networking debugging skills @ the packet level 8. strong understanding of http a…
It's implied, but worth stating explicitly: automation of mass server deployments and operations should be on the list.
i.e., how do you assembly-line build an entire rack or cage without manually installing any software? it's not easy. in fact it's very hard, probably even the most advanced groups require some manual intervention or at least some manual troubleshooting every once in a while.