Tunnell Consulting's Executive Team

Maryann Gallivan - President and CEO

Maryann is an experienced consultant with over 25 years of experience with a focus on Life Sciences. Maryann has split her time working in both Europe and North America helping clients with business strategy and organizational transformation. Her consulting assignments have provided her with opportunities to work across businesses in Research and Development, Supply Chain, Sales and Marketing as well as in Support Services.

Maryann has held a variety of leadership roles with Gemini Consulting, Capgemini, The Monitor Group and Archstone Consulting. Prior to beginning her consulting career, Maryann spent eight years in public accounting with Arthur Andersen & Co. where she earned her CPA. She has been a member of Tunnell’s Board since 2014.


  • Graduate Certificate, Women in Politics and Public Policy, University of Massachusetts
  • MBA, Trinity College, Dublin, Ireland
  • BS, Business Administration, Boston College
  • Certified Public Accountant

Jerry Robinson - Senior Vice President, Tunnell Government Services

Tunnell’s Senior Vice President for Government Services, Jerry Robinson, has more than 30 years of experience in government contracting, including experience with scientific services, technologies, software and solutions ranging from innovative C4ISR and advanced sustainment systems to counterterrorism, intelligence and integrated security solutions for clients in the defense, intelligence and homeland security communities. To his work with Tunnell’s government clients he also brings a strong background in finance and accounting that is invaluable for agencies that must do more with less in an age of tightening budgets.

Formerly Chairman and CEO of SFA, Inc., a subsidiary of then Global Technology Strategies, Inc., a national security company, he has a deep understanding of the needs of government agencies and an extensive track record of working with them successfully. His prior experience also includes serving as Chief Financial Officer of SFA, Inc. In addition, he has held key finance positions at Vega Precision Laboratories, a defense electronics manufacturing company; Halifax Engineering, a government contracting IT and security service company; and Fairchild Industries.

Contact Jerry at jerry.robinson@tunnellgov.com


  • M.B.A., Accounting, George Mason University
  • B.S., Finance, Towson State University

Robert Johnson - Group Vice President, Business Development Leader, Life Sciences

Over the last 30 years, Bob Johnson has led and advised multinational companies and helped them achieve record sales and profits through the implementation of business development and operational excellence programs. He has worked with global organizations, turn-arounds, startup companies and private equity firms, and for the past 10 years has focused on pharmaceutical, biotech and medical device organizations.

His areas of expertise include sales process improvement, operational strategy, lean manufacturing, performance and compliance improvement, organizational effectiveness, change management and strategic outsourcing. In the course of his career, he has held key roles at a number of leading consulting companies, including Celerant, Sapient and EDS. He has also held a variety of roles with high tech, systems integration and computer consulting companies, including Ampro, Data General and Wang Laboratories.

Contact Bob at bob.johnson@tunnellconsulting.com.


  • Stanford Executive Program, Stanford Graduate School of Business
  • B.S. Industrial Management, Purdue University

Larry Frattura - Chief Financial Officer

Larry brings to Tunnell over 30 years of experience in the financial services industry. As Chief Financial Officer he maximizes financial results and improves operations. He helps the organization craft sound business solutions that serve both our future and the well-being of our client companies. He is responsible for evaluating the impact of long-range planning, evaluation of potential alliances, acquisitions or mergers, pension plans, investments and various benefit plans of the corporation.

Prior to joining Tunnell Larry was Controller/Chief Financial Officer of Marcum LLP (formerly Smart Devine LLC) where he oversaw all financial activities for a small regional accounting, tax and consulting firm. He was the primary contact for banks, lawyers, outside accountants and insurance companies. He successfully managed due diligence processes and was responsible for the due diligence process related to the conversion of the company. Previously he was CFO at Magellan Search and Staffing and Vice President, Finance, Yoh Services, LLC at Day & Zimmerman. Other positions included VP/CFO at CDI Corporation and CFO for the Financial Services Line of Business at KPMG LLP. He is also a CPA.

Contact Larry at larry.frattura@tunnellconsulting.com


  • B.S., Accounting, Villanova University

Marian Preston – Vice President, Chief of Staff

Marian has been with Tunnell for over 40 years and has held roles that include Vice President, Business Operations and Employee Retention with Tunnell Government Services, Director of Human Resources, HR Business Partner and Assistant to the President.

She has extensive knowledge of Tunnell’s culture and clients. As a co-leader in the strategic planning process, she provides the strategy team with the necessary resources to ensure alignment with the CEO and leadership team. She assists in Tunnell’s succession planning process with the goal of preparing the firm for its continued success in the future.

Marian has been a member of Tunnell’s Board of Directors as Corporate Secretary for over 20 years. In conjunction with Tunnell’s Finance department she oversees the Tunnell-sponsored ESOP and 401k retirement plans.

Contact Marian at marian.preston@tunnellconsulting.com


  • MA, Human Resources Management, Villanova University (Courses Completed)
  • Human Resource Certificates – Villanova University
    • Essentials for Business
    • Professional HR Management
  • BA, IT for Business, Immaculata University
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