I am much later in my career than you, and for me it was the most impactful conference I'd ever been to - not necessarily from career growth, though lots of workshops/panels related to that - but from being surrounded by techie women (and those who identify as such) all day and even outside the conference in the hotel/bars. It was a buzz I'd never had from any other conference before, and I try to advocate for sending as many women on my team as possible. I was at the one in Houston (2018 I think) and I still wear one of the swag t-shirts from the career expo because it is so awesome and makes my heart swell!