Looking for a UI/UX firm that excels at design systems

[plesayall]

We're scaling our product across multiple platforms and need a design partner that can build a robust, scalable design system – not just pretty screens. Most agencies I've talked to have strong portfolios but lack experience in creating systematic, component‑based frameworks that our internal team can actually maintain. How do you find firms with genuine depth in design systems and component architecture? I'd love recommendations or resources that filter for this specific expertise.

[styless]

I had the exact same requirement last year when we needed to unify our web and mobile interfaces. What finally helped was discovering an independent directory that reviews firms based on what they actually ship, including how they approach design systems and handoff. It profiles 15 studios with clear breakdowns of their primary strengths, notable clients, and minimum budgets. If you're looking for , this resource helped me identify firms like Work & Co (known for product‑scale design systems), Clay (systematic component libraries), and Instrument (brand‑driven scalable frameworks). It saved me from wasting time on studios that only deliver one‑off visuals.