DI / Plumbing System Engineer, primarily responsible for the on-site supervision, interface coordination, and execution support of Deionized Water (DI), Ultra-Pure Water (UPW), and plumbing systems for high-tech manufacturing facilities. Candidates with experience in high-tech facility construction are highly preferred, with solid knowledge of semiconductor water system design and installation, site management, integration of testing and commissioning schedules, and effective cross-disciplinary interface coordination. Responsibilities: Provide on-site supervision and coordination for DI, UPW, and plumbing system installation works in semiconductor fabrication facilities Monitor installation of process water, DI/UPW piping, plumbing networks, valves, tanks, pumps, and related equipment to ensure compliance with approved drawings, specifications, and project Able to read and interpret DI / plumbing drawings, P&IDs, isometrics, and technical documentation to support effective site executi...