Donald Firesmith is a Principal Engineer in the Software Solutions Division of the Software Engineering Institute (SEI), a Federally Funded Research and Development Center (FFRDC), where he helps the United States Military and other Governmental Agencies acquire large and complex software-reliant systems. He has 34 years of experience in both commercial and governmental software and systems development in numerous application domains that range from software applications and management information systems to embedded aviation and space systems. His primary areas of expertise include requirements engineering, system and software architecture engineering, object-oriented development, testing, quality engineering, and process improvement including situational method engineering.Donald Firesmith has published dozens of technical articles, spoken at numerous international conferences, and has been the program chair or on the program committee of multiple conferences and workshops. He has taught several hundred courses in industry and numerous tutorials at conferences. These articles, presentations, and conference papers can be downloaded from his personal website. He is the developer of the OPEN Process Framework (OPF) Repository, the world's largest free open-source website documenting over 1,100 reusable system/software development method components. In his free time, he crafts magical wands as a hobby.LinkedIn: https://www.linkedin.com/profile/view?id=1955172Wikipedia: http://en.wikipedia.org/wiki/Donald_FiresmithOPFRO website: http://www.opfro.orgPersonal website: http://donald.firesmith.netFacebook: https://www.facebook.com/don.firesmithTwitter: https://twitter.com/DonFiresmithFeuerschmied's Wand Shoppe: http://magicalwandshoppe.com