Meet the speakers of this year's Signal Conference, including Kate Heddleston, an engineer who builds software in Python, Flask, and AngularJS; Mike McGarr, an Engineering Manager at Netflix who ensures quality software through automation; Alan Palazzolo, a journalist who writes code to inform his stories and manage MinnPost's data base; Prabode Webadde, the founder of CarCodeSMS, which won a hackathon and was acquired by another company, now focusing on delivering customer experiences at scale for Edmunds.