Programmers, with whom I'd worked with my early career (about a dozen years) are particularly prone to mansplaining. The worst case was a candidate for a "no assholes rule" dismissal who in the course of one company pizza lunch:
- Told me what marketing "really" was. (I have a degree in it. He doesn't.)
- Gave me repeated unsolicited advice on how to market the company's products.
- Told me that my marketing campaign for one product (his) was garbage and that I should talk to the person who did the marketing for another product to learn how to "do it right". I did the marketing for that other product too....
- Also told me how much make-up I should use and how to apply it because apparently he's an expert on feminine health and beauty.
I mentioned the "no assholes rule" I think? He was later canned for being an asshole, despite his apparently very formidable technical skills.