Yes, as long as you satisfy the border services officer that you are entering as a visitor and will not be working.
When you are ready to work in Canada, you will need to go to a Port of Entry (exit and re-enter Canada). When you re-enter, you must present your Port of Entry (POE) Letter to get your work permit. Make sure your POE Letter is not expired.
If you received an eTA with your work permit, you do not need to apply for a second eTA.