A Multi-Welder (or Combination Welder) is a highly skilled professional proficient in multiple welding techniques—typically TIG (GTAW) and Stick (SMAW) or MIG (GMAW)—used to fabricate, repair, and join metal components in industrial, construction, or manufacturing environments. Key duties involve reading blueprints, preparing materials, and producing high-quality welds in various positions, including pipe welding.