Kris Markel

Markel has over 15 years of experience in software development, beginning in Microsoft technologies and switching to OS X and open source in 2006. He's worked with .NET, C#, Microsoft SQL Server, and also Java and web technologies. In his experience as both a developer and a development lead for Nordstrom, his use of UML and his advocacy for best practices impacted both the development cycle and the business processes. He has also served as a Scrum Master on a number of projects. Markel is currently a Senior Software Engineer at Zumobi where he has worked on a number of iPhone apps including Ziibii, Snow and Ski Report by REI, Inside Xbox 360, and the Today Show.

Hal Mueller

Mueller has over 20 years of experience in professional software development, and has been a Cocoa programmer since 2005. He works as an independent developer, specializing in mapping and navigation applications for desktop and mobile platforms. After graduating from the University of Rochester with a mathematics degree, he worked for several years as a research programmer for a US Navy imaging radar project. He then spent 10 years developing microclimate, regional, and global scale environmental simulations for state and federal environmental agencies, He has worked in Fortran, Lisp, C, PHP, and Objective-C, and delivered products for iPhone, Mac OS X, Palm OS, and the web. He is especially interested in spatial algorithms and mapping software, and leads an open source mapping project for the iPhone. Mueller is a regular presenter at local developer groups and at national geospatial data conferences.

Chris Parrish

Parrish has been actively developing software on the Macintosh platform for over 20 years. He has worked extensively on graphics and publishing software, including over five years at Adobe Systems working on PageMaker, InDesign and other publishing applications. In addition he holds a master's degree in electrical engineering from the University of Washington. While at the UW, he studied data compression with an emphasis on speech encoding. Since leaving Adobe, Parrish has co- founded and actively serves as the CEO of Seattle-based RogueSheep Incorporated. At RogueSheep he and his coworkers have worked for over five years to design, implement and deliver a variety of Macintosh software and award-winning iPhone applications to customers and clients.

Instructors are subject to change.