Australia has a points-based system for migration where people are assessed based on the number of points they get. According to an online calculator I have 80 points and my profession is also on the list of qualified professions (software engineer). Does this mean I can automatically receive a residency visa without finding a job in advance? How does the system work?
Yes, you can apply and receive the residency visa without ever setting foot in Australia or getting a job offer. However, "automatically" is a bit optimistic: the visa application is quite a bit of work and while waiting times vary widely, it can easily take several years before you get a response.