The primary job of welders is to join metal together using intense heat. They work in a wide range of industries from manufacturing to aerospace to oil drilling. Other industries that use welders include automobile, manufacturing, construction, or maritime. As a welder, you execute projects according to your client’s specifications. You must understand the details of different welding metals, including stainless steel, aluminum, and brass, and you must be able to read blueprints and follow technical instructions. Additional job duties depend on your specific industry. You can also get voluntary certification from the American Welding Society (AWS) to prove your proficiency in the trade.