Fonderie is a Dutch eCommerce agency that helps direct-to-consumer brands build and grow their businesses on Shopify, with a focus on brands selling in Europe. The agency specializes in Shopify development, conversion rate optimization (CRO), and user experience and interface design (UX/UI). Its services include designing and building online stores, improving existing shopping experiences, testing changes, and supporting brands with ongoing optimization. Fonderie also helps clients through rebrands and provides assistance after launch.

The agency works particularly with beauty and lifestyle brands, recognizing that an online store should communicate the feeling and world behind a product, not simply display items for sale. Its approach combines visual design, practical implementation, and structured, data-informed experimentation to help clients identify effective improvements. Client feedback highlights clear project communication, detailed design work, responsive development, and CRO changes intended to improve store performance. Fonderie presents itself as a collaborative partner for brands seeking a considered Shopify experience, from initial development through continued testing and refinement.