Read and interpret engineering drawings, blueprints, and isometric sketches. Perform fitting and assembly of structural steel and piping components. Carry out marking, cutting, grinding, and alignment of materials. Ensure proper fit-up prior to welding activities. Use hand tools, power tools, and measuring instruments accurately. Coordinate with welders, supervisors, and QA/QC teams. Follow offshore safety procedures and permit-to-work systems. Maintain housekeeping and ensure tools and equipment are in good condition.