diagrammer

A diagrammer is a person who creates diagrams to convey information, processes, relationships, or spatial arrangements. The role appears across disciplines where visual representation helps clarify complex ideas, including software development, engineering, education, architecture, data analysis, and theatrical production.

Diagram types vary by field but commonly include flowcharts, data-flow diagrams, class or sequence diagrams (in software), mind maps, network diagrams, process diagrams, schematic drawings, and architectural site plans. In theater and stage production, a diagrammer may produce blocking diagrams, lighting plots, set diagrams, and rigging diagrams used by directors, designers, and technicians.

Practitioners use a range of tools, from general-purpose drawing programs and specialized diagramming software such as Visio, Lucidchart, draw.io, and PlantUML, to computer-aided design (CAD) programs for technical drawings. Clear labeling, consistent symbols, and alignment with established notation (where available) are important for readability and collaboration.

Although the term is not tied to a single formal occupation, diagrammer is widely used as a job description for professionals responsible for producing diagrams and visual plans. The concept highlights the importance of visual thinking in communicating complex information. See also diagram, diagramming, flowchart, UML, data visualization, and technical drawing.