Yes, whenever you reset, you get back all the skill points you've earned, and can then respend them any way you see fit. The only restriction is that all the skill points you earned as a 1st job class must be spent on 1st job skills, and not 2nd job skills.
Just keep in mind that you don't get a skill point for your first level in a job, so if you reach job 50, you would have 49 skill points to spend, and not 50.