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Thomas H. Sinton, President & Chief Executive Officer

Tom has 30 years experience as a business innovator and leader. He founded ProBusiness Services, Inc., in 1986 and served as its CEO until 2003, when ADP purchased it for $500 million. ProBusiness went public in 1997 and achieved annual revenues of $170 million at the time of its acquisition. Tom served on Boards at Smart Time Software, Savista Corporation and on the Advisory Board of Baird Capital Partners, LLC. He holds a B.A. in English from Harvard College, an M.S. in Food Science from the University of California, Davis; an MBA from Stanford University and was a Fulbright Scholar at the University of Vienna.


Shel Perham, Executive Vice President & Chief Operating Officer

Shel has more than 25 years of experience in finance, accounting and operations. Prior to joining Perquest, he served as vice president and chief accounting officer of UTStarcom, a $2 billion multinational US publicly traded company and global provider of wireline and wireless telecommunications infrastructure and handsets. Previously Shel was the vice president of finance with ProBusiness Services, where he was responsible for building and managing the companies operational finance team and supporting the development of its payroll outsourcing division. He was also division controller and corporate director of finance for Hexcel Corporation. Shel began his career at Deloitte & Touche where he served as manager in their Audit Services Group. Shel is co-founder, board member and chief financial officer of The Creek, a non-profit youth center for middle school youth. He has a BA in business/economics from UCLA and is a CPA.


Cheryl Paterson, Vice President Engineering & Chief Information Officer

Cheryl has over 20 years of experience developing Human Capital Management (HCM) applications. Cheryl was VP of Engineering for ADP/ProBusiness where she was responsible for defining a global product strategy and managing the HCM development teams. Cheryl also served as CTO/VP of Engineering for InterPro, a workforce and expense management software company, VP Engineering for Cyborg Systems, developing a new global HCM product line and was a partner with an implementation consulting firm.  Cheryl has a B.A. in Business Administration from the Anderson School of Management at the University of New Mexico, and is a member of IEEE and Board Chair for Big Brothers Big Sisters of the Bay Area.


Leslie A. Johnson, Vice President Agent Development & Relations

Leslie has more than 20 years experience in executive management, client service strategy and execution. She most recently served as the Senior Vice President and Chief Service Officer at Accenture (formerly Savista). Prior to joining Savista, Leslie was Senior Vice President, Relationship Management, at ProBusiness Services, Inc., where she designed and launched a strategic service model yielding industry leading client retention and satisfaction in the mid-sized and large corporate markets. She was also a former senior executive in the Business Services Division at Bank of America and former Senior Vice President at Ultimate Software Group, Inc. Leslie has a B.A. degree from the University of Colorado and a graduate of the Financial Management Program of the University of Virginia-Darden Business School.


Adrienne M. Baker, Vice President Payroll and Tax Operations

Adrienne has over 25 years of experience in the payroll industry. Before joining Perquest, Adrienne was Director of Tax Projects and Compliance at ProBusiness Services, Inc., now a division of ADP, Inc. In addition, she held the positions of Manager of Payroll Operations and Project Manager at ProBusiness. Prior to ProBusiness, Ms. Baker was the VP of Operations for EMCON, Inc., an environmental consulting firm. Adrienne began her career with Ernst & Young. She is a Certified Payroll Professional (CPP) and holds a B.S. from Ithaca College in New York.