In the latest Uncork Sessions event, I sat down with former Stripe CTO David Singleton to talk about real-world advice on hiring, and company culture, of (of course) AI from someone who scaled one of tech’s most iconic companies

At Uncork, we regularly host conversations with experienced operators and builders to share practical, hard-earned lessons with early-stage founders. Recently, we were fortunate to be joined by my good friend David Singleton, former CTO of Stripe and now a startup founder himself, in our offices for a candid discussion on what it takes to build enduring tech companies.

Drawing from his time scaling Stripe and now launching his own company, David shared advice that resonates across sectors — from hiring and product focus to crafting your company’s narrative and culture. Here are five key takeaways for founders building in today’s fast-moving tech environment:

Hiring is the Most Important Thing You Do

David didn’t mince words: your early team will shape your company’s trajectory more than any single decision. At Stripe, he focused on hiring people who were intellectually honest, fast learners, and willing to take ownership.

“You want to find people who raise the bar, not just meet it. Hiring people who can teach you something every day — that’s the goal.”

Takeaway: These aren’t just high-performers — they’re force multipliers.

Avoid Over-Titling in the Early Days

Startups often feel pressure to hire senior titles early — like a VP of Sales or Head of Marketing — but David cautioned against this. At the earliest stages, you don’t need a title; you need someone who can build.

“A Head of X who’s used to managing a 20-person team might not be the right fit when the whole company is 5 people.”

Takeaway: Look for versatile builders who can adapt as the company scales.

Clarity Is a Superpower

David emphasized the importance of being able to clearly articulate what your company does and why now. The best founders have a crisp, compelling answer to both.

“If you can’t explain why your company should exist today — versus five years ago or five years from now — you’re not ready to pitch.”

Takeaway: Clear messaging sharpens your focus — not just externally, but internally too.

Repeatability > One-Off Wins

Founders often mistake early customer interest or press attention for traction. But unless you can do it again — and again — it’s not scalable.

“Ask yourself: can we do this 10 more times, with the same kind of customer, in the same way?”

Takeaway: Repeatability is what separates momentum from true product-market fit.

Great Founders Are Learning Machines

Across every stage, David stressed that the best founders are obsessed with learning. At Stripe, this culture of curiosity and improvement was core to their success.

“The founders I admire aren’t the ones with all the answers. They’re the ones who learn the fastest.”

Takeaway: Whether it’s customer feedback, team dynamics, or market shifts — treat everything as input.

Final Thoughts

David’s experience — from early days at Google, to helping scale Stripe, and now building his own startup — gives him a deep, firsthand perspective on what it really takes to build. His advice to founders is simple but hard-earned: surround yourself with the right people, be crystal clear about why you’re doing this, and keep refining, over and over again. The early days matter more than you think. Set the right foundation, and you give yourself a real shot at building something enduring.

Uncork portfolio teams can find a video of the entire conversation on our Platform Notion. Everyone else can learn more about Uncork and how we support early-stage founders at uncorkcapital.com ✨