In 1993 she founded the Jongeriuslab studio, where she has pursued independent projects and also created products for major clients, including Maharam, Danskina, IKEA and KLM.

Her research on colors, materials, and textures is never complete. All her questions are open-ended, and all her answers provisional, taking the form of finished and semi-finished products. These are part of a never-ending process, and the same is essentially true of all Jongeriuslab designs: they possess the power of the final stage, while also communicating that they are part of something greater, with both a past and an uncertain future. The unfinished, the provisional, the possible – they hide in the attention for imperfections, traces of the creation process, and the revealed potential of materials and techniques. Through this working method, Jongerius not only celebrates the value of the process, but also engages the viewer, the user, in her investigation.

For Vitra, the Dutch designer has developed distinctive pieces such as the Polder Sofa and the East River Chair. Jongerius has consistently addressed the significance of colors and surfaces in contemporary design in her work with textiles, ceramics and furniture. She has been the Art Director for colors and materials at Vitra for many years and developed the Vitra Colour & Material Library – a system that enables the versatile combination of different materials and colors throughout the extensive Vitra product collection. Hella Jongerius has also written a book about this complex task entitled 'I Don’t Have a Favorite Colour'. 

Works by Hella Jongerius have been shown at museums and galleries such as Design Museum (London), Galerie kreo (Paris) and the Moss Gallery (New York).