FTE, has signed NDA as far as I know.
Not the deprecated legalpad.wm.org, and not the process we have in place here, since these are for volunteer developers.
WMF employees sign an NDA when they join the Foundation (or they should) and this is why it doesn't make sense to make them sign the volunteer NDA. Unless we change that process.
In the meantime, I wonder what @Aklapper thinks.
The current Legalpad document is called "Trusted Volunteer Access & Confidentiality Agreement" and it has references to "Volunteer" all over. I have no idea what is the diff with the NDA signed by employees, but in any case, as of today it cannot be recycled.