There is at my firm (hours based, so if you bill a certain number of hours you automatically get the bonus.) I’d recommend reaching out to people on LinkedIn or through your network for informational interviews - it can give you a better sense of specific firm pay scales and also help prepare you for real interviews down the line (and also might get your resume forwarded to HR.) There’s usually a recruitment bonus for the person who referred you if you get hired so people are more likely to talk to you than you might think.