A "WELDER MULTI CS" is an experienced welder proficient in multiple welding processes, particularly for Carbon Steel (CS) and other metals, skilled in reading blueprints and performing both fabrication and quality inspection of structures, often in heavy industry or construction. Key responsibilities include using various welding techniques (like GTAW/TIG and SMAW/Stick) on materials like carbon steel, interpreting technical drawings, fabricating and assembling metal components, inspecting welds for quality and safety, and maintaining equipment.