If you're in the US, there is only an -infinitesimal- chance that they'll actually ask for references for a software job. They'll likely run a background check

If you're in the US, there is only an -infinitesimal- chance that they'll actually ask for references for a software job. They'll likely run a background check and make sure your resume isn't obviously lying (they'll confirm start/end dates and title, basically), and make sure you're not a criminal, MAYBE do a credit and/or drug test.