Building StackAdapt: how three founders turned failure into a 1,600-person company | Vitaly Pecherskiy

StackAdapt scaled from three co-founders in a studio apartment kitchen to a 1,600-person organization operating across 20 markets. In this episode of BUILDERS, Vitaly Pecherskiy, CEO and Co-Founder of StackAdapt, walks through the reality of building a programmatic advertising platform over ten years—including a payroll crisis that came down to emergency collections, the four-year grind from launch to true product-market fit, and the decision to go global during COVID that grew the team from 170 to 900 people in three years.

Topics Discussed:

• The moment credit cards maxed out two days before payroll and the emergency collection calls that followed
• Why product-market fit took until 2018 despite launching in 2014 and understanding the industry problem
• Scaling from 170 people in one Toronto office to 900 globally in three years during COVID
• The transition from COO to CEO after nine years and rejecting the idea of "playing the role"
• Hiring a full-time videographer at 50 people in 2016—years before it became standard practice
• The "hot buttons" framework that's driven consistent messaging since 2015
• Why leaders at 1,600 people still need to go "toe to toe" with individual contributors

GTM Lessons For B2B Founders:

Product-market fit takes longer than problem validation: StackAdapt launched in 2014 with deep industry knowledge—Vitaly and his co-founder had worked in programmatic advertising and felt the pain firsthand. But they didn't achieve product-market fit until 2018. The gap wasn't product quality; it was "figuring out how do we predictably and profitably acquire customers" and "where does our product need to go, how should we arrange our organization around key drivers behind our business." Domain expertise validates the problem exists, but GTM economics, organizational structure, and precise positioning require years of iteration. Don't confuse problem validation with PMF.

Receivables management is a survival skill, not finance hygiene: When StackAdapt's credit cards maxed and payroll hit in two days, Vitaly looked at receivables and realized they had enough—if collected immediately. He called customers directly: "We need to collect today. Please wire us the money." It worked. The lesson wasn't just about cash flow—it fundamentally changed how they thought about the business. Vitaly noted this was "the first lesson in let's make sure that we're good at not just closing business, actually collecting the money." For founders: revenue doesn't exist until it's in the bank. Build collection velocity into your sales process from day one, not as a finance function downstream.

Invest in creative infrastructure before it's "efficient": At 50-60 people in 2016, StackAdapt hired a full-time videographer—capturing behind-the-scenes footage, customer stories, and marketing content. Vitaly acknowledged "this was way before a lot of the trends today" but the decision created speed and depth. Later, they built an internal creative studio that serves customers but also powers their own marketing, shortening "timelines from idea to execution because it's all done in-house." The strategic insight: they weren't buying video production capacity; they were building institutional knowledge about their customers and product that an external agency could never develop. Bring creative in-house when speed-to-market and product understanding matter more than unit economics.

Message consistency beats message innovation: StackAdapt identified 8-10 "hot buttons"—themes that resonated deeply with customers—and built all sales playbooks and marketing around them. The themes identified in 2015-16 are "still relevant" nearly a decade later. This runs counter to the instinct to constantly refresh positioning. The discipline wasn't finding new messages; it was "hammering that messaging basically for years." For founders: once you identify what truly resonates (not what sounds clever), commit to it. Consistency compounds in ways that constant repositioning never will.

Geographic expansion during crisis unlocks talent arbitrage: COVID forced StackAdapt fully remote, which Vitaly reframed as "wait, we're stuck at home, we're fully virtual, let's go global." They grew from 170 people in Toronto to 900 globally across 20 markets between 2020 and 2023. This wasn't just headcount growth—it was access to talent pools that didn't exist when limited to one geography. Remote-first became a strategic advantage for both velocity and cost structure. The lesson: don't view distributed teams as accommodation; view them as competitive infrastructure for accessing global talent markets at scale.

Leaders must maintain technical depth at scale: At 1,600 people, Vitaly still maintains he needs to "go down to individual contributor level and go toe to toe with them" on critical parts of the business. He pushes this philosophy company-wide: "If you're living in a culture where as a leader, sitting in a high chair, trying to just order people around... how do you know what's grounded into the reality?" This isn't about micromanagement—it's about maintaining technical credibility and understanding ground truth. He still joins customer calls and makes prospect connections. For founders scaling past 100+ people: the risk isn't that you'll stay too close to details; it's that you'll retreat into abstraction and lose your ability to make good calls.

CEO transitions require rejecting borrowed playbooks: When Vitaly moved from COO to CEO after nine years, he initially tried to model himself on what a CEO "should" be. The breakthrough came six months in: "I don't need to play a role of a CEO. I just need to be the CEO." He realized every successful CEO brings different strengths—there's no universal profile. The job became simpler: "Are we building the best version of our company that will be successful long term?" For founders facing role transitions: stop optimizing for the role's expectations and start optimizing for the company's needs using your actual strengths.

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