About · Two founders, four divisions
Working across brand, acquisition and product. Founded and led by Nikola Zubak and Ozren Buvač. Both lead the whole company.
Nikola Zubak co-founded Umbrella after seventeen years in brand and design, freelancing since 2007 and running his own studio since 2009. His work is strategic art direction: connecting business decisions to visual execution, as the senior who is neither only a designer nor a pure strategist.
Identity, art direction, messaging and design systems, for brands built from the first mark to the last ad. He thinks most marketing decisions are taste wearing a data costume, which is why at Umbrella the number is agreed first and the work is measured against it.
Ozren Buvač co-founded Umbrella after nine years in digital advertising, inside a fifteen-year commercial career that started in sales. He carried revenue targets before he ran media budgets, and he still judges advertising the way a business does: by what a customer costs to acquire, and what that customer brings back.
He ran digital for Ultra Europe and World Club Dome, where 15% more of the people who clicked the ads bought tickets than the year before. From 2021 to 2025, at Five, an Endava company, he ran paid acquisition hands-on for global app brands in security software, healthcare, education and sport, on accounts spending up to 400k USD a month across as many as ten markets. He rebuilt a global security app’s App Store and Google Play listings, and audited a US brokerage’s paid and organic acquisition. None of these companies are Umbrella clients.
His work runs across security software, financial services, healthcare, education, live events and ecommerce. He is still the one inside the ad accounts.
Origin sets the big picture. Scale takes it to market. A few lines on the product are enough to start.