About Us

Our People

Strategic consulting is as much art as science — a balance reflected in the background of our staff. Strategic Decisions Group attracts management consultants with rigorous analytic capabilities, deep business and industry knowledge, and training in management and organizational skills. 

Our people also bring creativity, insight, and humor to the table — a combination of intellectual and human qualities that makes for satisfying and productive relationships with our clients. We maintain a flat organizational structure. Our company’s success is built on the invaluable talents and contributions of our entire staff.

Brad Allison

Principal 

Calgary, Canada

Brad Allison is a principal, located in Calgary and affiliated with our Houston office. He provides technical, commercial, and strategic advisory services to clients in the energy industry.

He has over 35 years of domestic and international upstream energy experience spanning exploration, development, and M&A. Educated as a geologist, Mr. Allison has an extensive background in subsurface technical assurance, commercial evaluations, portfolio management and project execution. This is complemented by more than 10 years of experience as a senior executive focusing on strategy development and value creation.

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Dr. Eric Bickel

Partner

Houston, USA

Dr. Eric Bickel, an SDG partner and board member, combines extensive industry leadership in oil & gas and power with a tenured professorship at the University of Texas at Austin.

He directs the Graduate Program in Operations Research & Industrial Engineering while working closely with clients in decision analysis, specializing in portfolio and risk management across sectors like oil & gas and power. As a former president of the Decision Analysis Society and an esteemed SDG Fellow, Dr. Bickel plays a pivotal role in maintaining the firm’s competitive advantage.

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Marcy Conn

Partner

Menlo Park, USA

Marcy Conn leads SDG’s Executive Education Practice designing and delivering capability-building programs for clients. 

Marcy is a recognized instructor and coach for a wide range of educational programs centered on experiential learning. In addition, she has led consulting engagements, including asset strategy, project risk analysis, portfolio management, technology valuation, and decision process design. Her clients include multi-national corporations (energy, technology, consumer products, life science), innovative startups, and public sector agencies.

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Dr. Jan Hansen

Engagement Manager

Duesseldorf, Germany

Dr. Jan Hansen is an engagement manager with a deep academic grounding in molecular life sciences and experience in the life science industry. 

He collaborates with biotech and pharmaceutical clients across Europe and North America at SDG. His expertise spans financial modeling, portfolio management, and crafting strategic business approaches. Leveraging his scientific acumen and diverse enterprise experience, he navigates market dynamics to help clients turn inventive concepts into viable business prospects.

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James Conner Kemper

Engagement Manager

Houston, USA

James Kemper is an Engagement Manager with primary experience focused on commodities and aerospace industries.

In commodities, he has experience across upstream, midstream, and downstream oil & gas, electric power, and mining. Leveraging his expertise in decision analysis, he has led and supported projects in business strategy, portfolio valuation, network optimization, and scenario analysis.

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Chris Roe

Principal

Duesseldorf, Germany

Chris Roe has over 30 years of consulting experience leading strategy projects with life sciences, energy, telecommunications and manufacturing clients. 

His strong facilitation, problem structuring and evaluation skills have been deployed in Europe, North America, AsiaPac, Middle East and Africa. He is also the lead instructor for our Decision Quality Executive Education program in Europe.

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Dr. Mark Seidler

Chief Executive Officer

Duesseldorf, Germany

Dr. Mark Seidler leads the company from the Düsseldorf office. He has more than 30 years of experience in structuring and development of strategies for global leaders in pharmaceuticals, agrosciences, fine chemicals and energy technology in Europe, the U.S., and Asia.

His expertise includes interdisciplinary and international projects. He guides clients through major business transitions, including decisions to enter new business sectors or geographic markets, to align innovation and product portfolio strategy, and to transform business models in the face of industry change.

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Dr. Carl Spetzler

Chairman

Menlo Park, USA

Dr. Carl Spetzler, co-founder and chairman of Strategic Decisions Group has been an innovator in the field of Applied Decision Science for over 50 years. 

He has been the trusted advisor to many C-level executives and Boards of Companies across many industries. Many of his assignments have resulted in transformational change. Dr. Spetzler is a frequent speaker at executive events and the lead author of “Decision Quality: Value Creation from Better Business Decisions” (Wiley, 2016).

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Einar Sveinsson

Principal

Duesseldorf, Germany

Einar Sveinsson is a principal, located in Iceland and affiliated with our Duesseldorf office. 

He advises clients across the energy value chain on business strategy and investment decisions. His focus is on the energy transition through advising on decarbonization strategies, renewable power investments, CCS, and the full hydrogen value chain.

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Josée Tremblay

Principal

Calgary, Canada 

Josee Tremblay is a principal, bringing 25+ years of broad international experience leading large organizations and managing capital-investment decisions across complex portfolios. 

.  Prior to joining SDG, she held senior executive positions in engineering, operations, and projects with multi-nationals in the energy sector.  She specializes in applying the decision quality framework to understand upsides and tradeoffs and articulate business opportunities through the lens of deep technical understanding and strategic insights. 

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Trina Weller

Principal

Menlo Park, USA

Trina Weller is a Principal in the Silicon Valley office with over 30 years of experience in strategic decision making as a consultant, educator, and software executive. 

She has guided companies in multiple industries including life sciences, energy, consumer products, technology, and venture capital. Trina is an expert in developing organizational capabilities around adopting decision making frameworks and processes, reducing human biases in decisions, and utilizing decision-analytic tools for strategic insight.

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Adam Wendelboe

Chief Financial Officer

Boston, USA

Adam Wendelboe, SDG’s Chief Financial Officer, brings over 15 years of expertise as a corporate strategist known for leveraging data intelligently across diverse industries like technology, information, and media. 

Apart from financial leadership, he drives operational efficiency, supporting partners with strategic insights that fuel sustainable growth. His data-driven approach plays a pivotal role in aligning financial acumen with broader operational goals, steering SDG toward continual success.

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