Earlier quoted context omitted.
Anyone who does classified work (including software developers) can't do it at home.
Not at all true. However, your department will have to install things like properly certified safes into your house. This may mean bolting things into your concrete basement, etc.
I've personally participated in the accreditation of on-site SIPRNET (which operated by DISA at SECRET//NOFORN) enclaves and it is an expensive process that your company will not pay to have done at your house.
In addition, there would need to be daily audits of the security records for things like vaults, rated security room (even without open storage), and a vault for the Type 1 encryption device (which needs its crypto keys updated regularly) -- at the least -- which connects your (or really DISA's leased line) to the peer.