Drop your bio introduction. If you are on a stage the organizers have granted you more credibility than nearly anyone else at the event. And 95% of the time your bio is on the website or in the program. The audience can get it if they want it, right there, on their phone, at any time. If you must, 30 seconds is enough time to say your name, profession, and why you care about the topic. Anything more is likely wasting their time.
(1) Scott writes elsewhere in the article “Most speakers forget they’re providing a service to the audience, not to themselves.” This is why providing a detailed bio at the beginning of your talk is a mistake.
(2) For two other things to remember when starting a presentation, see How NOT to start a presentation and A talk or presentation is an opportunity to be generous.