Actually, it is not necessary for devs to be classified as CSAs - plenty enter under the Engineer classification (I've done this myself)
The CSA is a common catch-all, since USCIS tends to frown upon CS degrees using the Engineer title. But if you area a CE, EE, SE, etc, this is a straightforward path.
The barriers are not significant especially when weighed against the payoff, and consider that all of the major software firms do this so much that success is more or less guaranteed (e.g., if you are denied your TN at the border, the big shops will send a lawyer up to argue your case on your amended re-try). Most companies go so far out of their way to bring in Canadian talent that it greatly diminishes the systemic issues you're likely to experience.
The CSA is a common catch-all, since USCIS tends to frown upon CS degrees using the Engineer title. But if you area a CE, EE, SE, etc, this is a straightforward path.
The barriers are not significant especially when weighed against the payoff, and consider that all of the major software firms do this so much that success is more or less guaranteed (e.g., if you are denied your TN at the border, the big shops will send a lawyer up to argue your case on your amended re-try). Most companies go so far out of their way to bring in Canadian talent that it greatly diminishes the systemic issues you're likely to experience.