Hi @sdrover
I hope you're having a great day!
If you are self-employed (you bill your US employed and they pay you -while not issuing a W-2 or T4) then all the income would be reported as self-employed income on form T2125. The tricky part is that you would also need to convert your income into Canadian dollars. If you received income throughout the year, you can typically use the average yearly rate.