Meet the SIGNAL speakers: Allison Craig, Feross Aboukhadijeh, Eileen Uchitelle, and Byron Deeter. These individuals will share their expertise in engineering "mad science," investing, testing, and more at the upcoming SIGNAL conference. Allison Craig is a frontend engineer with a background in fashion design who will talk about developing good Slack apps. Feross Aboukhadijeh works on "mad science" technology that surprises users, including his P2P BitTorrent client built with WebRTC. Eileen Uchitelle has an 18-step plan for writing great talks and focuses on testing and improvement in her session on security. Byron Deeter is a cloud computing investor who will be on a panel discussing how nonprofits can raise capital alongside other venture fund experts. You can get $75 off your SIGNAL ticket price with the promo code BLOG75.