Executive Bios

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Jeffery W. Yabuki is the President, Chief Executive Officer and a Director of Fiserv, Inc. (NASDAQ: FISV). Headquartered in Brookfield, Wisconsin, Fiserv is a leading global provider of financial services technology solutions. The company reported $5.82 billion in revenues in 2018, with nearly 24,000 associates serving more than 12,000 clients. In 2019, Fiserv was recognized among FORTUNE® magazine's World's Most Admired Companies for a sixth consecutive year, and in 2015 was named to Forbes magazine's America's Best Employers. 

With more than 25 years of experience in the financial services industry, Yabuki joined Fiserv and its Board of Directors in 2005. Under his leadership, the company announced a long-term strategic platform transforming Fiserv from its traditional holding company model into an integrated operating company focused on providing best-in-class financial software, systems and services that enable people to move and manage money at the point of thought.

Prior to joining Fiserv, Yabuki was Executive Vice President and Chief Operating Officer at H&R Block for more than six years. Before H&R Block, Yabuki held a progression of leadership positions during 12 years at American Express, culminating with President and Chief Executive Officer of American Express Tax and Business Services.

FORTUNE and The World's Most Admired Companies are registered trademarks of Time Inc. and are used under license. From FORTUNE Magazine, February 2019 ©2019 Time Inc. Used under license. FORTUNE and Time Inc. are not affiliated with, and do not endorse products or services of, Licensee.

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James W. Cox is Executive Vice President of Corporate Development for Fiserv, Inc., responsible for driving the company’s merger, acquisition and divestiture strategy. Cox rejoined Fiserv in this role in 2017, having previously served in this role from 2006 through 2013. Cox has led the company through acquisitions that have driven differentiation in key solution areas and expanded its capabilities and scale, as well as divestitures that aligned the company with its strategic objectives. Key acquisitions he has spearheaded include CheckFree Corporation, Open Solutions, Inc. and CashEdge, each of which furthered the company’s delivery of solutions in step with the way people live and work today.

Previously, Cox served as EVP, Group President of Fiserv Health Solutions. He joined Fiserv in 2001 through the acquisition of Trewit and has 30 years of financial services experience. Prior to joining Fiserv, Cox was managing partner of Lund Koehler Cox & Arkema, LLP, now part of Baker Tilley Virchow Krause. While a practicing CPA, Cox frequently advised clients on their merger and acquisition programs.

Cox earned a bachelor’s degree in accounting at the University of Minnesota and practiced as a licensed CPA until 2000.

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Paul Dumas is Chief Human Resources Officer at Fiserv, Inc. In this role, he leads the strategy and operations of the human resources functions throughout Fiserv and serves as a member of the Fiserv Executive Committee.  

Dumas previously worked at U.S. Anesthesia Partners, where he served as Executive Vice President and CHRO from 2015 until his appointment with Fiserv. Prior to that, he was Chief Operations Officer for a technology startup; and spent more than a dozen years combined as CHRO at VWR International and Agere Systems, leading globally diverse teams through people-focused transformation.

Dumas’ leadership experience in organizational transformation, culture development and business integration was refined at companies such as Merck & Co., Pepsi-Cola and Hyatt Hotels Corp.


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Robert (Bob) Hau is Chief Financial Officer and Treasurer at Fiserv, Inc. and provides oversight for all financial functions of the company.

Hau has nearly 30 years of experience in business and financial leadership roles. Prior to joining Fiserv, he was executive vice president and chief financial officer of TE Connectivity Ltd., a $12 billion global product technology company. At TE Connectivity, Hau was responsible for developing and implementing financial strategy, as well as creating the financial infrastructure necessary to drive the company’s financial direction, vision and compliance initiatives.

Previously, Hau served as chief financial officer for Lennox International Inc. Hau also spent 22 years at Honeywell International Inc. in a variety of progressive financial and operations leadership roles, including serving as chief financial officer of its Aerospace Business Group, Specialty Materials Business Group and Aerospace Electronic Systems Unit.

Hau holds a master’s degree in business administration from the USC Marshall School of Business and a bachelor’s degree in business administration from Marquette University.

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Lynn S. McCreary is Chief Legal Officer and Secretary at Fiserv, Inc. In this position, McCreary is responsible for all the legal functions of the corporation, including mergers, acquisitions and divestitures, commercial contracts, vendor negotiations, employment matters, intellectual property, litigation and government compliance. McCreary joined the company as Deputy General Counsel in March 2010. 

Prior to Fiserv, McCreary spent over 16 years in private practice, representing commercial, retail, financial and insurance companies.


Devin McGranahan is Senior Group President at Fiserv, Inc. where he oversees the company’s Biller Solutions, Credit Union Solutions, Electronic Payments, Enterprise Payments Solutions, Financial & Risk Management Solutions, Investment Services and Output Solutions businesses.

With more than 25 years of business and leadership experience, he previously served as a senior partner at McKinsey and Company, engaging with leading financial services companies on a broad range of strategy, payments and business-building opportunities. Devin also held a variety of management roles at the firm, including co-leader of the North America Financial Services Practice and co-chair of the Global Senior Partner Election Committee. In addition, he served as leader of the Global Insurance Practice.


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With Fiserv since 2014

Kevin Schultz is Executive Vice President and President, International Group at Fiserv, Inc. Mr. Schultz previously served as Group President, Digital Banking, overseeing the company’s consumer-focused electronic payment platforms and digital channel solutions.

Prior to joining Fiserv in 2014, Schultz served as president of global financial services at First Data Corporation with oversight of payment processing services to financial institutions worldwide. Prior to First Data, Schultz served as global head of processing services at Visa Inc., where he managed its U.S. third party processing business, global risk products and domestic processing business expansion across all regions. Schultz began his career at TYME Corporation, a pioneering regional ATM network, and later spent over a decade in senior leadership roles at Visa. He served as executive vice president, sales and marketing, at Global Payments Inc., prior to rejoining Visa in 2006. Schultz has more than 30 years of experience in the payments and financial services industry. He holds a master's degree from Columbia University and a bachelor’s degree from the University of Wisconsin Milwaukee.

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Steve Tait is Chief Sales Officer at Fiserv, Inc. In this role, Tait leads the Global Sales Organization.

Previously, Tait served as Group President of International at Fiserv, leading all sales, service and delivery functions outside the U.S. Before that role, he was Group President of Depository Institution Services at Fiserv, leading Bank Solutions, Credit Union Solutions and Item Processing Solutions. He joined Fiserv in 2009 as Executive Vice President.

Prior to joining Fiserv, Tait was President and Chief Executive Officer of RSM McGladrey, an accounting, tax and consulting services firm in the U.S. and a subsidiary of H&R Block. He has also held roles at Gartner Group and Xerox Corp.

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Byron C. Vielehr is Chief Administrative Officer at Fiserv, Inc. In this role, Vielehr leads the development and delivery of high-quality technology experiences and drives the acceleration of the go-to-market strategy for high-profile integrated solutions. He oversees the company’s Digital Channels, Enterprise Technology, Global Services, International, and Open Solutions organizations.  

Previously, he served as Group President of Depository Institution Services at Fiserv, overseeing the company’s domestic account processing businesses, which serve banks, thrifts and credit unions.

Vielehr has more than 25 years of technology and financial services experience. Prior to joining Fiserv, he served as President of International and Global Operations for Dun & Bradstreet (D&B), where he was responsible for all D&B businesses outside of North America and led operations globally.

Vielehr has also held executive positions at Northstar Systems, Merrill Lynch Asset Management and Merrill Lynch Global Private Client, as well as Strong Mutual Funds, Thrivent Capital Management and Systems & Software Technology Inc.


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Marc West is Executive Vice President and Chief Information Officer at Fiserv, Inc.  In his role, West oversees information technology infrastructure and operations and leads the company’s strategic focus on next-generation technology platforms.

He previously served as Chief Technology Officer for the International Group at Fiserv. Prior to that, West served in other leadership roles at Fiserv: President of Digital Channels, and Senior Vice President of Banking and Aggregation for Electronic Payments.

Before joining Fiserv in 2013, West was the President and CEO at Mamasource, where he was responsible for business growth and strategic partnerships. He has also served as Managing Director of e-business at Barclays Global Investors, and has held senior leadership positions at H&R Block and Electronic Arts.

Throughout his career, West has served as the technical and business advisor to numerous startups and as the CTO for several large, online trading platforms – bringing leading-edge technology to market in a fast-paced environment.