Technically, as spouse of a
TN holder, you're eligible for a TD visa. The TD however does not allow you to work in the US. And from what I've been told by US CBPs is that if you're in the US on US soil and working, you are required to have a work permit, even if you're telecommuting for a Canadian company.
Would you need to periodically return to Canada for meetings and stuff with your employer?
Someone else more versed in employment visas may know of another way.