I also dress up for interviews even if the place is casual, and I even usually dress nicely for the first day of work. You’re normally introduced to 100 people

I also dress up for interviews even if the place is casual, and I even usually dress nicely for the first day of work. You’re normally introduced to 100 people on your first day, and I like to make a good impression. I’ve never had a problem with negative feedback from this. I think you can tell someone’s cultural fit better by a conversation than their clothing.