Mechanical Engineer TN visa in Software and related

Hi,

I am mechanical engineer, but all my 13 years( 7 year stint on H1B in usa) work experience has been in IT (programming, System analysis, Software Architecture).

I have another year to get my Canadian citizenship but I would like to apply for TN in the near future and assuming i can get a job offer in the states.

1> What TN category can i apply under.
2> What kind of education and work experience equivalency i need.