Tim Mackinnon is an early pioneer of agile development. His contributions include many well recognized techniques: Mock Objects, Gold Cards, Heartbeat retrospectives and Futurespectives as well as starting the Extreme Tuesday Club (XtC). He has worked with numerous organisations, developing, teaching and mentoring teams in effective agile methods. Tim is also the founder of Iterex Ltd, a company specialising in Iterative Excellence and the creator of the Iterex Professional software.