There are a few that spring to mind:
Listing legal requirements as benefits. Yes, thank you for giving me 20 days off and a pension contribution. 🙄
Not stating the salary, or having a ridiculously broad range e.g. £30-60k ‘dependant on experience’.
Seeing the same role advertised for months on end. They always want the moon on a stick.
Poor Glassdoor reviews, anything below 3.5 stars rings alarm bells for me.
Depends on your role/industry, but a lack of clarity about remote/hybrid working arrangements. This seems to be a huge problem in my industry.
Do some LinkedIn stalking of people who worked there previously. It’s interesting to see how long people spent there before moving on.
In an interview, giving ‘fluffy’ answers that don’t actually answer your questions. Either they don’t know enough about the role they’re hiring for, or they’re just not putting enough effort in.
Poor communication or a lack of communication during the hiring process. I’ve pulled out of great opportunities because of this a few times.