Dave Verwer , iosdevweekly.com
Dave is an independent and freelance iOS developer and author of iOS Dev Weekly. He has been developing for the Mac and iOS since 2006 and is secretly quite proud that his first professional gig had him using a (real) vt100 green screen terminal. He's glad he doesn't have to use that any more though!
SwiftUI by examples
Multithreading in Swift with GCD and Operations
Scott Grosch , raywenderlich.com
Scott has been an iOS developer since the first public release of the SDK from Apple. His day job is working as a Solutions Architect for a Fortune 500 company in the Pacific Northwest but he does contract work for a couple clients via his one-man shop, Gargoyle Software, LLC.
Jeff Watkins , metrocat.org
Jeff lives an idyllic life on Bainbridge Island with his daughter, girlfriend, and their five cats. He divides his time between writing iOS applications, teaching public speaking workshops, and speaking at conferences. And yes… they know five cats is outrageous, but they love each and every one of their crazy fur balls.
Server-side Swift with Vapor
Tim Condon , raywenderlich.com
Tim is a Swift developer from Manchester, UK. He's the server-side Swift team lead at raywenderlich.com and has written the unofficial-official book on Vapor with the founders of the framework. He founded Broken Hands a few years ago delivers talks and workshops on Vapor and server-side Swift around the world. He also co-organises the ServerSide.swift conference - the world’s first and only conference focused on server-side Swift.