We are building a team to help companies reach their potential.

We have a combined 30+ years of operating experience at some of the most impactful venture capital backed technology companies in Silicon Valley including PayPal, Coupons.com, Palantir Technologies, Practice Fusion and Atlassian.


Jason Portnoy

General Partner

Jason helps companies prepare for, and scale through, hyper-growth periods. He often works closely with CEOs to assist with raising capital, building/managing teams and navigating complex negotiations.

Prior operational experience: PayPal, Clarium Capital/Founders Fund, Palantir Technologies, Practice Fusion

Education: MS Management Science & Engineering, Stanford University; BS Chemical Engineering, University of Colorado, Boulder

Paul Willard

General Partner

Paul helps companies find balance between what the user needs, the business wants and what resources allow. A keen eye for young companies with huge potential, Paul focuses on mentoring across product, engineering and marketing efforts.

Prior operational experience: NextCard, Washington Mutual, Coupons.com, Practice Fusion, Atlassian

Education: MS Manufacturing Systems Engineering, Stanford University; BS Aerospace Engineering, Iowa State University


Kellie Menendez

Operating Partner

Kellie helps the firm and our portfolio companies with marketing, product, and design. She has over 15 years experience as a Creative Director and Online Marketing leader at multiple companies, including Practice Fusion, Levi Strauss and Red Bricks Media.




Ryan is the CFO of Subtraction Capital, he prepares the fund financials and provides the financial reports to our limited partners. He has over 10 years of outsourced CFO experience for multiple venture capital funds including Azure Capital, Epic Ventures and the Utah Fund of Funds.

Stephanie Fernandez

Director of Operations

Stephanie manages all of the operational elements of Subtraction Capital. She brings a wealth of legal expertise, financial savvy and organization to the team. Prior to Subtraction Capital she worked as a Senior Corporate Paralegal at Fenwick and West for 6 years.