Rubicon Project

Rubicon Project was founded about 10 years before this interview (circa 2005) to solve a fundamental inefficiency in advertising. Before automation, buyers on Madison Avenue had to manually contact sellers via phone, fax purchase orders, negotiate contracts, and even changing a single publisher on an order cost $10,000 and 40 hours of work. The founders recognized that computers should be able to talk directly to computers, automating the entire process.

The company started by optimizing display inventory advertising, creating a marketplace where premium publishers like Wall Street Journal, eBay, Spotify, and NBC could access large-scale demand from buyers like WPP (the world's largest agency holding company). Publishers typically have billions of ad impressions monthly but can only sell directly to hundreds of advertisers—Rubicon Project's platform automated the sale of unsold inventory at scale. Joe Pruse joined when the company had 30 employees and witnessed rapid growth; within six weeks there were 50 employees, and by the time of this interview, the company had over 500 employees.

The company demonstrated sophisticated M&A discipline as the industry evolved. When "header bidding"—a new technology that allowed real-time bidding and more accurate pricing in ad servers—emerged rapidly, it created both opportunities and challenges. Demand-side platforms were suddenly inundated with trillions of bid requests, tripling their operational costs. Rather than build a solution in-house (which would have taken 1-2 years), Rubicon Project acquired Intogal for $38 million. Intogal's 20-person team solved the problem by filtering and shaping traffic to send buyers only the impressions they wanted, reducing cost inefficiencies across the entire platform.

As a publicly traded company with $150 million in cash on the balance sheet, Rubicon Project processes over 1 billion in advertising spend annually and takes 20-25% of transaction value, equating to roughly $250 million in revenue. The revenue organization alone comprises about 200 people, though only 15 are dedicated to prospecting new accounts—most are servicing existing relationships. Joe Pruse credits his nine-year tenure to the industry's constant evolution; despite the company's scale, he says it still feels like a startup because the technology landscape changes multiple times per year, keeping innovation and learning at the forefront.