"Design work" refers to the task of creating or planning something with a specific purpose or intention in mind. It involves the process of designing or visualizing ideas and concepts to produce a desired outcome. Full definition
During the period when it was important as a source of heat, the fireplace became the object of design work by significant artists. (britannica.com)
I've had the honor for the past 12 months of doing design work on a classic and traditional custom home right here in my little mountain valley. (lindsayhillinteriors.com)
I see your technical / math mind as well as your eye for design working in tandem on this one.... (revolutionaryredesigns.com)