In 2019, at a dining table stacked on books in a small dodgy apartment in Rotterdam-South, Dennis made a decision that changed everything. At the time, his life looked like most others: a full-time 9–5 job, the perspective of working for a boss until retirement, and a humble background without any entrepreneurial blood. With no money, no network, and no safety net, nobody expected him to build what he has today.

The alarm went off every morning at 4:30 AM. Discipline came first: training, clean eating, reading, and hours of work on his business before the world woke up. At nine sharp, his job began. When the bell rang at five and most people called it a day, Dennis was only halfway. He worked late into the night, seven days a week, and in over six years only missed three days when he was too sick to get out of bed. His first “yes” came after weeks of cold calls and door knocking — a local carwash. With no budget, he did everything himself, from creating the ads to reporting on results. That was his first rep. And reps build strength.

Fast forward to today, and the contrast is clear. From a dining table in Rotterdam-South to managing over €75M in ad spend. From one local carwash to becoming the go-to agency for some of the fastest-growing and most recognized eCommerce brands in the world. From a one-man grind to leading a team of A-players that brands line up to work with. The scoreboard tells the story: against all odds, Dennis built an agency that consistently breaks records.

Most agencies gamble. Dennis trains. Every campaign is a rep, every result goes on the scoreboard, and every setback is another chance to get stronger. He doesn’t just build strategies; he builds athletes in business — his team, his clients, and himself. Always chasing progress. Always raising the bar. Always pushing for that extra 1%. Because in business, like in sport, you don’t rise to the level of your goals. You rise to the level of your training.

Of course, the growth wasn’t smooth. Rapid scaling came with failures, wrong turns, and setbacks that tested his limits. But where most would’ve slowed down, Dennis pushed harder. That discipline — the ability to stay in the game when it’s toughest — became the foundation of DDU’s culture.

Dennis knows what one decision can do. He knows the power of one opportunity, one “yes,” one person who believes in you. That’s why DDU isn’t just about ads. It’s about proving what’s possible when discipline, belief, and relentless execution collide. For his team. For his clients. For anyone chasing more than what life handed them.

If your goals touch business, marketing, or advertising, you’re in the right place. Not for shortcuts. Not for hype. For clarity, discipline, and results.