Incorporating is relatively cheap (a few hundred dollars) and you can ignore the company later (or wind it up) should you no longer wish to work through it. If you're in Ontario, it provides pretty good instructions; other provinces presumably have similar page.
That is not the real problem. The problem is your compensation under this arrangement will be a lot less than you thought it was. Your corporation will only be able to bill for days you work - not the (over 10) statutory holidays each year, nor your vacation, nor any days you are ill. You may also be expected to provide your own laptop and even your own licenses for the development tools you use. You won't be eligible for Employment Insurance since you own your actual employer. This means you don't have to pay premiums, but it also means you won't be covered if you lose your "job" (that is, if your company loses its only client) or get too ill to work. And of course there won't be any health insurance provided by your client - if you want prescriptions, glasses, dental work etc to be covered you'll have to buy your own coverage. Not to mention disability insurance.
As a side note, it isn't you who will be taxed punitively, it's the "employer" - who will have to submit both the usual employer-paid and employee-paid contributions to EI, CPP, etc. It's super important to them that you're not an employee, because if they were an employee they would owe you a lot of stuff they have no plans to give you. If you want that stuff, you need to provide it to yourself.
Assuming you are ok with the money side of things, you can incorporate, register for GST, then each month invoice them, submit the GST, pay yourself and submit your own CPP contributions. It's maybe half an hour's work a month to do that. Once a year you issue yourself T4s. Learning how is pretty straightforward. But you must understand the difference between billing a client X dollars an hour and being paid X dollars an hour as an employee. It is an enormous difference.