CNC Machinist Sets up and operates conventional, special purpose, and computer numerical control (CNC) machines and machining centers to fabricate metallic and nonmetallic parts. Who are we? Founded in 1849, Ducommun is the oldest company in California. Starting as a hardware supply store during the California Gold Rush and eventually assisted in the birth of the aerospace industry in Southern California by providing aircraft aluminum to early aerospace pioneers like Lindbergh, Douglas and Lock