Level IV: 8+ Years of Experience. Creates and updates sketches, working drawings and contract documents using Computer Assisted Design (CAD) software. Prepares 2D and 3D models. Must be able to read and comprehend detailed customer requirements, data sheets and supplier specifications. Requires familiarity with drafting techniques and engineering concepts and terminology. Able to read engineering drawing and blueprints. Prepares documentation to support design drawings. Often requires experience with the specific design application in use by client base.