An AI-native agency built for the speed of modern business

We started Quassum because we were tired of how long it takes to ship software. Months of discovery, endless meetings, budgets that balloon — the traditional agency model is broken for teams that need to move fast.

So we built something different. An agency where every project starts with a working demo in under a week. Where you pay a fixed price for a concrete result. Where AI augments our engineers instead of replacing them — making us 5x faster without sacrificing quality.

Since 2019, we've shipped over 50 products — from iOS apps with tens of thousands of users, to open source libraries downloaded millions of times, to SaaS platforms used by hundreds of businesses. We work with startups, scale-ups, and enterprises across the globe from our base in Europe.