Billionaire Profile
David Duffield
Global Rank
#435

Image: Him121 at English Wikipedia | Public domain | via Wikimedia Commons

David Duffield

CEO, Business software
UNITED STATES
Real-Time Net Worth
$8.32B
Estimated based on Business software stock value as of April 20, 2026
0% (24h)
Age
85
Source
Business software
Industry
Technology
Citizenship
UNITED STATES

Biography

David Duffield is an American billionaire entrepreneur in the software industry, celebrated for co-founding PeopleSoft in 1987 and Workday, Inc. in 2005. He earned a Bachelor's degree in Electrical Engineering and an MBA from Cornell University. His career began at IBM before he launched several successful ventures, including Integral Systems and Business Software Corporation. Duffield's innovative approach to enterprise software prioritized user experience and scalability, disrupting the traditional mainframe-based systems. As of 2024, his net worth is estimated at $8.7 billion. Duffield is also a significant philanthropist, notably through Maddie's Fund, dedicated to animal welfare, and the Dave & Cheryl Duffield Foundation, supporting various causes including higher education and veteran services.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life and Education

David Arthur Duffield was born on September 21, 1940, in Cleveland, Ohio, and raised in Ho-Ho-Kus, New Jersey. He graduated from Ridgewood High School and then attended Cornell University, earning a Bachelor of Science degree in electrical engineering in 1962 and a Master of Business Administration in 1964. At Cornell, he was a member of Beta Theta Pi.

Rise to Success

Duffield began his career at IBM as a marketing representative and systems engineer. In 1968, he left IBM to found Information Associates, which developed software for university exam scheduling. Later, he founded Integral Systems, a human resources management systems vendor. In 1979, Duffield started Business Software Corporation, providing real-time human resources and payroll applications. However, his most significant achievements came with PeopleSoft, founded in 1987, which became the world's second-largest application software company before being acquired by Oracle in 2005. In 2005, Duffield co-founded Workday, Inc., which provides cloud-based human capital management and financial management software.

Key Business Strategies

Duffield's business strategy has consistently focused on developing user-friendly, relational database-driven systems. He emphasized creating a positive work environment. His ability to identify market needs and deliver innovative software solutions has been pivotal to his success. PeopleSoft's client-server HRMS application suite was a groundbreaking innovation. His subsequent ventures, particularly Workday, capitalized on the shift towards cloud-based solutions, further solidifying his position in the industry.

Philanthropy

Duffield is known for his extensive philanthropic work. In 1994, he and his wife, Cheryl, established Maddie's Fund, an animal welfare organization named after their miniature schnauzer. The Dave & Cheryl Duffield Foundation supports companion animal welfare, higher education and veteran initiatives. He has donated hundreds of millions of dollars to Cornell University, and as a result, the university renamed its College of Engineering as the Cornell David A. Duffield College of Engineering in recognition of his contributions.

Career Milestones

1964

Began Career at IBM

Started as a marketing representative and systems engineer.

1987

Founded PeopleSoft

Co-founded PeopleSoft, serving as CEO and Chairman.

2005

Co-founded Workday

Co-founded Workday, serving as CEO Emeritus.

2017

Founded Ridgeline

Founded Ridgeline, a cloud platform for investment management firms.

Philanthropy & Social Impact

Animal Welfare

Maddie's Fund

$200M (Initial)

Founded an animal welfare organization to promote no-kill shelters and support animal welfare programs.

Education

Cornell University Donations

$550M (Total)

Significant donations to Cornell University, including the establishment of the David A. Duffield College of Engineering.

Various

Dave & Cheryl Duffield Foundation

Unknown

Supports companion animal welfare, higher education, and veterans.

Business Philosophy & Leadership

Notable Quotes

""You get to the point in life where you sort of wake up to the world and look outside your little box.""

Leadership Principles

Innovation

Driving new technologies and approaches in software development.

Employee Focus

Creating a positive work environment and valuing employees.

Philanthropy

Giving back to the community and supporting causes that matter.