Centergy Group joins our clients through understanding the core values and strategic business objectives of the organization – seamlessly joining, facilitating and leading a well integrated and functional Team environment. In response to our clients’ true and validated needs, Centergy Group assigns specific resources, as appropriate, to service our clients efficiently and effectively.

David Mook, PMP

David Mook is a seasoned entrepreneur incorporating Centergy Group, a project management consulting firm, in January of 2000. Centergy Group has developed a reputation for "putting it all together" by consulting with organizations on their most important initiatives. With a client list including Coca Cola, CNN, Turner Broadcasting, Turner Sports, Invesco, Atlantic Trust, Clean Cities–Atlanta, and AECOM, Centergy Group has taken on a wide range of project types with one thing in common – they must succeed.

In 2004, David founded the annual Georgia Environmental Conference and serves as the Executive Director / Executive Project Manager for this influential and growing public forum. Through collaboration with the ever evolving Steering Committee of environmental experts and the dedication to the conference Mission – “to provide Current, High Value, and Relevant Educational Content to Professionals practicing in Georgia's Environmental Arena”, the conference has emerged as the most diverse and comprehensive gathering of environmental professionals in the state.

David, born and raised in Atlanta, Georgia, is married to Amy Mook and has 4 lovely and inspiring daughters. He earned a bachelor degree in Economics from University of Georgia and a master degree in Business Administration from Keller Graduate School of Management.


Amy Mook
Vice President

Amy Mook brings 15+ years of success in event management, and sales/marketing products and services. A respected industry executive, she is noted for her ability to drive and translate strategic initiatives into business results. She combines an extensive HR background with her sales and marketing talents to help clients “connect-the-dots” between marketing and sales for greater efficiencies and increased revenues. Whether Amy is advising clients on new growth strategies or rolling up her sleeves to help create new sponsorships or competitive sales programs, she always looks for the most efficient alignment and value delivered to the customer.

Her depth of industry experience includes work with global and national sales organizations such as The Coca-Cola Company, Coca-Cola Enterprises, ADP, and Ganz to capture human resources capital and commercial business, creating valuable revenue.

At Centergy Group, Amy consults with clients in strategy and planning, messaging and brand marketing, marketing communications, and sales enablement.

Amy is a graduate of the University of Georgia with a dual Bachelor of Science degree in Public Relations and Family and Consumer Sciences.

Brant Bailey
Project Manager

Brant Bailey joined the Centergy Group team in 2010. Brant came to Centergy Group from a design and construction background with seven years of project experience in completing projects on-time and on budget while maintaining client goals with a high level of professionalism. Brant has a bachelor of International Studies degree with a strong focus in Economics and Political Science from Georgia State University.

At Centergy Group, Brant leads the Organization Management Group, providing member services, outreach, website maintenance, and support for organization's long term goals. Brant also oversees the development of the Annual Georgia Environmental Conference and supports ongoing projects for Centergy Group Project Management. In addition, he undertakes a business development role implementing innovative ideas for attracting and retaining new clients.

Jill Geraghty
Project Engineer

Jill Geraghty, Ed.D., joined the Centergy Group team in 2013 to provide support for the Annual Georgia Environmental Conference. Jill’s background is in higher education as both an administrator and faculty member. Currently, she is an adjunct faculty member for the University of Maryland (UMUC) and for Argosy University. Her previous experience includes special events and conference planning and management, curriculum development, and student scholarship program stewardship. In addition to her work in higher education, she is a freelance copyeditor.

Jill has a B.A. in Psychology, and a M.A. and Ed.D. in Educational Leadership, all from the University of Central Florida. She resides in Dawsonville, GA, with her husband, Mike, an IT and Project Management professional, and their two children.

Paula Wagner, PMP
Senior Faculty

Paula Wagner, MBA, PMP has a vast background in operations, operations management, project management, financial planning, and strategic planning and management. Her 18 years of experience driving innovation to execution and strong training and coaching skills gives her the expertise to support clients with their business needs.

Paula specializes in developing the skills of business professionals. She has been in the boardroom and understands firsthand the challenges facing executives and the skills needed to be successful in this ever changing business environment. Paula develops and delivers training and executive coaching programs that focus on improving job performance and achieving career success.

Paula is a faculty member at Keller Graduate School of Management. She is also co-author of the book Global Program Management . This book focuses on creating a business vision in the private or public sector and strategically implementing a global project, program, and portfolio structure to achieve corporate success.

Randy Nichols
Project Manager

Randy brings a unique combined sales and operational expertise which provides a unique and well-rounded knowledge base and skill set. He has consistently shown the ability to successfully maintain an exceptional “client experience” in today’s ever changing business environment. Randy has an impressive list of former clients - Petsmart, Turner Broadcasting/CNN, Equifax, US Air Force, MicroAge, Children's Hospital of Atlanta, Phoenix Suns/America West Arena, Ping, Alston & Bird and Motorola just to name a few. He has also sold and project managed several major projects for those clients such as AFCEE relocation in San Antonio, Petsmart's HQ project in Phoenix, the CNN Newsroom/Office expansion in Washington DC and the Alston & Bird Washington DC location.

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