I'm turned off by the aggressive self-promotion style, to the point where I'd suggest that you seriously consider whether you want to be associated with such a company.

I also like succinct and colloquial: "Hi, I'm Tyler. I'm a co-founder of SpeakerText, and am in charge of the all the Tech. [Explanation of SpeakerText as appropriate]."

Of course, this depends on your audience. But all the examples you give seem to concentrate too much on you, and not enough on the product or the customer.