Our Team

Robby Robinson is Managing Director of The McCollum Group, LLC. He has held management and executive positions in major corporations and has over 30 years' experience as a management consultant to a diverse range of industries. He specializes in helping companies improve their business performance, in conducting executive assessments, and in coaching executives in leadership skills. In addition to his consulting activities, Robby has served as a visiting faculty member at several universities, teaching courses in organization effectiveness and leadership. Robby has a Ph.D. in Organizational Psychology from The Ohio State University and is a Licensed Psychologist in the state of Texas.

Dalia Sherif has held positions with the U.S. Department of Commerce and private firms in multiple countries, spearheading marketing, analyzing data across multiple business sectors, and having involvement in large-scale trade agreements. Dr. Sherif holds a Ph.D. in Industrial and Organizational psychology. She has been awarded several awards from the US Departments of State and Commerce, and is one of Houston Business Journal 2019 honorees as a “Woman Who Means Business” and a “Woman to Watch.”

Caleb Robinson is an associate of The McCollum Group, LLC. He specializes in coaching and business consulting. Through his financial licensure, he offers expertise in financial management and education, and he holds a professional designation as a Chartered Retirement Plans Specialist. He has previously held faculty and leadership positions at colleges in Texas and Massachusetts. Caleb earned his Ph.D. in Systems and Cognitive Neuroscience from UT Health at MD Anderson, providing him with unique insights into decision-making processes, risk mitigation, and motivation.