Joseph (Joe) Yoder (agilist, computer scientist, speaker and pattern author) is the founder and principle of The Refactory (www.refactory.com), a company focused on software architecture, design, implementation, consulting and mentoring on all facets of software development. Joe serves as president of the board of The Hillside Group, a group dedicated to improving the quality of life of everyone who uses, builds, and encounters software systems. He is best known as an author of the Big Ball of Mud pattern, which illuminates many fallacies in software architecture. Joe teaches and mentors developers on agile and lean practices, architecture, building flexible systems, clean design, patterns, refactoring, and testing.Joe has recently been working with organizations and thought leaders on the best practices for including quality aspects throughout the complete software life-cycle. In 2015 he won the New Directions award with a colleague at Saturn 2015, given to the presentation that best describes innovative new approaches and thought leadership in the application of architecture-centric practices for the presentation “QA to AQ: Shifting from Quality Assurance to Agile Quality”. Joe thinks software is still too hard to change. He wants to do something about this and believes that you can start solving this problem through the use of proven practices (patterns) and by putting the ability to change software into the hands of the people with the knowledge to change it.