When you're applying for a job at LMAX, your CV (or résumé, for our American readers) usually comes through me and I decide whether to call you for a technical phone screen.
I'm going to let you into a secret.
At JAX London Mike and I presented "Understanding the Disruptor - A Beginner's Guide to Hardcore Concurrency". This is the session we initially previewed to the London Java Community a few weeks earlier. The content is the same, but the feel of the presentation was quite different to us - the venue for the LJC event was more intimate, and it was easier to interact with the audience. At JAX, we were up on stage, which was pretty cool actually, but meant that it felt more like a lecture and it was less easy to connect with the audience.