About Us
Senior-Led, Not Handed Off
Unlike agencies where you sign with senior people but work with juniors, at The OS the senior people ARE the work.
Work With UsWhy We Built The OS
The OS was founded in Amsterdam in 2021 with a simple premise: brands deserve better than the typical agency experience.
Too many agencies operate the same way — impressive senior people win the pitch, then hand you off to junior account managers learning on the job. Scope creep. Missed deadlines. Diluted attention.
We built something different.
Three senior operators who do the work ourselves. No pitch team separate from the delivery team. No junior layer between you and expertise. When you hire The OS, you get Melvin, Joris, and Stefania — not their interns.
Our focus is European commerce: Amazon EU, Bol.com, and Shopify for brands that want to win across European markets. We chose this focus because it's where our expertise runs deepest and where we can deliver the most value.
We're based in Amsterdam — native to Europe, fluent in the complexity, and positioned in one of the continent's most dynamic e-commerce markets.
The Triangle of Trust
Three Leaders, One Team
Every successful European commerce operation needs three things: strategic vision, operational excellence, and creative execution. Most agencies split these across disconnected departments. We built a team where all three work as one.
Melvin van Leeuwaarde
Strategy Director & Managing Partner
15+ years scaling consumer electronics across EMEA. Former Global Head of Marketing at Linksys. Former Director of Marketing EMEA at Belkin International (6+ years). Full P&L experience with partners including Apple, Google, and Nike.
Global Head of Marketing, Linksys
Director of Marketing EMEA, Belkin
Partners: Apple, Google, Nike
Joris Bruring
Founder & Managing Director
22 years of creative entrepreneurship. Former CEO of TPS Studio, producing e-commerce content for Tommy Hilfiger, Calvin Klein, and G-Star. Gold award winner at Ex Awards 2025 for Corona's Olympic campaign.
Founder & Managing Director, The OS
Former CEO, TPS Studio
Gold Award, Ex Awards 2025
Stefania Popa
Digital Marketing Manager
6+ years in consumer electronics marketing. MSc Digital Marketing from University of Amsterdam (thesis prize winner). Achieved +33% conversion rate improvement on Amazon across 10 European markets.
+33% Amazon conversion rate (EU5)
+122% email revenue YoY (Ember)
5,000+ localized assets delivered
What Senior-Led Actually Means
No Handoffs
The people you meet are the people who do the work. No "pitch team" separate from "delivery team." No surprise introduction to junior account managers after you sign.
Direct Access
You'll have direct access to Melvin, Joris, and Stefania. Not filtered through layers of account management. Questions get answered. Decisions get made.
Accountability
With a small, senior team, there's nowhere to hide. We're accountable for results because our reputation depends on every engagement.
Efficiency
No time wasted on internal handoffs, briefing documents, or approval chains. Senior people can move faster because they don't need permission.
How We Work
Results Over Activity
We measure success by outcomes, not hours worked or deliverables shipped. Revenue growth, conversion rates, ROAS — the metrics that matter to your business.
Direct Communication
We say what we mean. If something isn't working, you'll hear it from us before you notice it yourself. No sugarcoating, no hiding behind jargon.
European First
We're not a US agency with a European add-on. We're a European team with deep local expertise. Amsterdam is home, not a satellite office.
Long-Term Partnerships
We're not interested in one-off projects or quick wins that don't last. We build for sustainable growth and measure our success over years, not quarters.
Native to Europe's E-commerce Capital
The Netherlands has the highest e-commerce penetration in Europe (92%). Amsterdam is home to Bol.com, Adyen, and a thriving ecosystem of brands, logistics providers, and technology companies.
Being based here isn't just convenient — it's strategic. We're positioned at the intersection of European commerce, with native understanding of the Dutch market and connections across the continent.
Brands That Trust Us
Ready to Work With Senior Leaders?
Let's discuss your European commerce goals. No pitch decks, no account managers — just a direct conversation with the people who'll do the work.