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Angelo M. Castelli

The chief operating officer for On Center Software, Inc. where his responsibilities include direct sales, channel partners, marketing and R&D. In addition, he serves on the firm’s executive Vision Team, a think tank for the future of construction automation. Castelli brings 10 years of commercial construction experience that includes chief estimator, project manager and team management. His expertise includes metal framing, carpentry, drywall, insulation, acoustic ceilings and millwork.

Doug Dahmer headshot

Doug Dahmer

The vice president of operations with Performance Contracting Inc. He started working in the industry in 1979 for his father’s drywall business and with his three brothers started Dahmer Brothers Construction Co. in 1989. They developed the company to be one of the best in the Kansas City area, which attracted PCI to acquire their family-owned business in July 2000. He currently oversees more than 800 employees throughout the Midwest and East Coast along with an international partnership for the Interior Division of PCI. His 35 years of experience with interiors has given him vast knowledge of all aspects of the industry, while continuing to work for one of the most innovative and progressive companies in the business.

Keith Giddens headshot

Keith Giddens

The president of Baker Triangle Prefab, Ltd. Giddens joined Baker Triangle in 1995 as a field employee and worked in their estimating and project management departments before filling the role of director of virtual design and construction at their corporate office in Dallas. He has worked on many projects that incorporated complex geometry including the Perot Museum of Nature and Science in Dallas and the Tobin Center for the Performing Arts in San Antonio.

Donald Gregory, Esq.

A director and chairman of the construction law practice area at Kegler Brown Hill & Ritter. He primarily represents subcontractors, suppliers, owners, contractors and others in the construction industry. Gregory has been involved in many of the most sizeable and important cases impacting the construction industry over the last 30 years, including disputes concerning bid challenges, claims, mechanic’s liens and prompt payment. He is active as an advocate in the alternative dispute resolution process, and he regularly serves as a mediator and arbitrator solving complex construction disputes. He has experience utilizing arbitration, mediation, dispute review boards, partnering and summary jury trials.

Michael Madigan headshot

Michael Madigan, Esq.

A director at Kegler Brown Hill & Ritter. He focuses his practice primarily in the areas of construction law and litigation, advising clients on mechanic’s liens, collections and other issues in the construction industry. Madigan aids clients with all facets of construction, from the initial contract review to claims and defective construction. Prior to entering law school, Madigan worked as a project manager for a national contractor. He is proficient in all aspects of construction claims, including labor inefficiencies, delays and differing jobsite conditions and also assists clients with analyzing and defending against such claims. Additionally, Madigan is experienced in trial and appellate practice and has successfully helped numerous clients resolve disputes through various alternative dispute resolution techniques.

Charles Mahaffey headshot

Charles Mahaffey

A business consultant for specialty contractors at Charles Mahaffey Consulting. He has spent more than 35 years in the construction industry providing cost estimating, project management services and executive leadership. Charles previously owned and managed a training facility for drywall estimators. While he successfully managed estimators and project managers in day-to-day operations, Charles also served as the Director of Project Implementation for one of the largest drywall subcontractors in the U.S.

Mark Nabity Headshot

Mark Nabity

The president and CEO of Grayhawk, LLC. Founded in 1967, Grayhawk is a commercial wall and ceiling contractor that also manufactures/erects prefabricated exterior wall panels and cold-formed steel roof trusses. Nabity has been involved with the estimation, design, shop drawings, fabrication, erection and project management of hundreds of prefabricated exterior wall panel projects in 22 states. Nabity has previously served as president of the Association of the Wall and Ceiling Industry and is a recipient of AWCI’s prestigious Pinnacle Award.

Norb Slowikowski

Founded Slowikowski & Associates. He is a productivity consultant and professional trainer who works on all aspects of management development. He has the proven track record and experience to prove that productivity improvement can be a reality in any company. Since 1982, he has assisted contractors in improving productivity and maximizing profitability. He has trained more than 8,000 foremen, superintendents and project managers in management and leadership skills from more than 150 construction companies in the United States and Canada.

Michael Vickery headshot

Michael Vickery

The chief executive officer at PeerEngine, Engineering & Services. Michael has more than 35 years of experience in the commercial construction industry. At PeerEngine he works to advance the prefabrication industry through the creation of standardized design practices and prefabrication specific products. He was instrumental from the inception of Baker Triangle’s early embracement of Visual Design and Construction, BIM, and assisted in their Integrated Project Delivery projects.

Steve Watkins headshot

Steve Watkins

A project management consultant and business advisor with Pivotal Consultants, Inc. For over 30 years, Watkins was president and owner of Aetna Construction, Inc., one of the largest and most prestigious drywall companies in South Florida. He currently works with growing companies in the construction industry teaching skills such as job costing, budgeting and project management for increased profitability. Watkins previously served as president of the Association of the Wall and Ceiling Industry and is a recipient of AWCI’s prestigious Pinnacle Award.