Jeff Williams linkedin
Chief Executive Officer
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Jeff Williams’ career as a business leader, entrepreneur, and consultant spans over 25 years. He has worked with top-tier executives globally, co-designing innovative, people-centric solutions that channel global trends and emerging technologies to yield breakthrough results.
Since assuming the CEO role at JMJ in 2020, Jeff’s distinctive skillset and vision have evolved the company’s approach to culture change consulting. Under his leadership, JMJ has stepped into the digital realm, helping clients find data-driven solutions to their challenges through the ground-breaking Transformation Cloud™ technology platform.
Beyond his executive role, Jeff is an entrepreneur and active investor in technology start-ups. He cofounded Umbrage, a digital product studio that designs and develops software solutions and was recently acquired by Bain & Co. He has authored dozens of articles and studies and regularly speaks on topics such as the energy transition, decarbonization, digital disruption, and innovation.
Before JMJ, Jeff held leadership positions at EY, serving as the global oil and gas consulting leader and spearheading the Americas’ energy consulting business. He also left his mark at Slalom Consulting, where he led the establishment of the Houston office and market presence.
Earlier in his career, Jeff was a managing director with Accenture for 18 years, advising energy companies on business strategy, operating models, digital strategy, innovation, and large-scale business and technology transformation.
Jeff holds a bachelor’s degree in business administration from Texas A&M University
Insights from around JMJ
JMJ to attend LNG 2026
January 15, 2026 | EventsJMJ will attend LNG 2026 in Doha (Feb 2–6), joining global leaders to share insights on safety leadership, cultural alignment, and reliable delivery across LNG projects, operations, and organizations.
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January 15, 2026 | BlogJMJ consultants share what they’re seeing across major capital projects, data center delivery, assessment and learning, and the growing impact of AI.
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