Demonstrates advanced knowledge of quality assurance program requirements and key construction codes (e.g., AWS, IBC, AISC); proficiency with inspection tools (e.g., weld gauges, bridge cam gauges, digital calipers, hi-lo gauges, feeler gauge); working knowledge of NDE methods and procedures (RT, UT, MT, PT). Witness and verify key structural testing and inspection activities, including weld fit-up/joint prep, weld visual, NDE, and bolt installation/torque, to confirm that contractor QC inspections and testing are being performed correctly, at the required frequency, and acceptance criteria are being met.