Senior Quality Welding Engineer – UHP Gas Systems

Applied Materials South East Asia Pte Ltd; Penang; On-site; MYR 120,000 - 180,000; Full time

Job summary

Applied Materials South East Asia Pte Ltd is seeking an experienced Quality Welding Engineer to support fabrication of UHP gas delivery systems for semiconductor process equipment. The role oversees weld quality across the fabrication lifecycle in a cleanroom environment, with emphasis on orbital GTAW and 316L stainless steel metallurgy.

The successful candidate will manage WPS/PQR development, welder qualification programs, SEMI standard compliance, and root-cause resolution for weld

Qualifications

• Bachelor's degree in Welding Engineering, Materials/Metallurgical Engineering, Mechanical Engineering.

Responsibilities

• Develop, qualify, and maintain welding procedure specifications (WPS) and procedure qualification records (PQR) for orbital GTAW of UHP gas lines, gas panels, and chamber weldments.
• Establish and audit welder/operator qualification programs for orbital and manual welding personnel working on UHP systems.
• Serve as the site subject matter expert on applicable SEMI standards, including F78, F81, E49.8, F70.
• Own weld quality within cleanroom fabrication cells: gowning discipline, purge gas control, ID/OD surface finish verification, and contamination prevention.
• Perform and oversee visual, boroscopic, and dimensional weld inspection against acceptance criteria; drive root-cause analysis and corrective action for weld discrepancies and nonconformances.
• Provide metallurgical oversight of 316L stainless steel (and related UHP alloys) including heat-affected-zone control, oxide/heat-tint discoloration limits, interpass temperature, and purge gas requirements.
• Specify, evaluate, and maintain orbital welding equipment — power supplies, weld heads, and tube-prep tooling — from AMI, Polysoude, Orbitalum, and equivalent, including PQ/programming, preventive maintenance, and end-of-life qualification.
• Partner with manufacturing engineering, quality assurance, and supply chain teams to qualify internal and supplier weld sources against consistent acceptance standards.
• Support root-cause investigations and 8D/CAPA activities for weld-related field or customer escrow issues.
• Maintain and audit weld travelers, certification records, and traceability documentation to support customer and internal quality audits.

Skills

Orbital GTAW welding

SEMI standards knowledge

Weld quality management

Root-cause analysis (8D)

Cleanroom manufacturing

Education

Bachelor's degree in Welding Eng./Metallurgical Eng./Mechanical Eng.

Tools

AMI Arc Machines

Polysoude

Orbitalum

Job description

Applied Materials South East Asia Pte Ltd is seeking an experienced Quality Welding Engineer to support fabrication of UHP gas delivery systems for semiconductor process equipment. The role oversees weld quality across the fabrication lifecycle in a cleanroom environment, with emphasis on orbital GTAW and 316L stainless steel metallurgy.

The successful candidate will manage WPS/PQR development, welder qualification programs, SEMI standard compliance, and root-cause resolution for weld