A TIG (Tungsten Inert Gas) / ARC (Shielded Metal Arc Welding) welder job typically involves using specialized welding equipment to join metal components, requiring expertise in interpreting blueprints, preparing materials, and ensuring high-quality, precise welds while adhering to safety protocols. They are responsible for setting up and operating welding equipment, preparing metal surfaces, performing welds in various positions, and inspecting completed welds.