A mold technician, also referred to as a machine operator or tender, uses manufacturing equipment to shape metal or plastic components for products. Your duties as a mold technician are to operate, calibrate, and maintain machinery, as well as inspect finished products to ensure quality work. You must be comfortable working in high-heat environments and performing physical labor, such as lifting up to 50 pounds and working on your feet. There are no formal qualifications for a career as a mold technician since your employer provides on-the-job training. However, obtaining an associate degree or higher in machine operations or materials production helps you gain experience and learn job skills.