CNC Operator. Titan Granite - St. Louis, MO. Titan Granite is seeking an experienced CNC operator. We fabricate custom countertops and run a Northwood 138 router. Previous stone experience is desired. Responsibilities. Operate the CNC to cut granite, marble & quartz slabs for fabrication. Monitor and verify that rough-cut machinery is operating correctly. Perform quality checks on finished pieces. Utilize overhead crane to relocate slabs. Operate...