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I help defense and security organizations turn complex transformations into stronger capabilities, greater resilience and lasting value for society.

Thomas Kullmann

Partner, Defense & Security and Government & Public Sector, Ernst & Young AS

Defense and security transformation leader. Trusted adviser on complex change. Focused on resilience, operational effectiveness and public value. Father of three and avid trail runner.

Thomas is a partner in Consulting and leads People Consulting in Norway. He is also a member of the Nordic Government and Public Sector leadership team and serves as the account leader for the Norwegian Police and the Norwegian Armed Forces.

With more than 17 years of experience, Thomas advises public sector organizations, particularly across defense, justice and emergency preparedness, on complex transformation programs covering strategy, governance, operating models, digitalization, people and technology.

Thomas holds a Master of Science in Economics and Business Administration from the Norwegian School of Economics and has completed executive studies in strategy, technology and entrepreneurship at Boston University.

How Thomas is shaping the future with confidence

Thomas helps defense, security and public sector organizations translate strategic ambition into lasting operational capability. By combining clear governance, practical transformation delivery and people-centered change, he supports clients in strengthening resilience, readiness and efficiency. He works closely with leaders and experienced teams to build ownership, transfer knowledge and help establish ways of working that endures beyond the engagement. Through this work, Thomas contributes to stronger institutions and more reliable public services in an increasingly complex environment.

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