Pipefitter / Welder | Semiconductor Industry (Phoenix)

Job Overview

Marketech International Corporation USA is seeking a skilled Pipefitter / Welder to support installation, fabrication, welding, testing, and commissioning of piping systems in semiconductor manufacturing and facility environments. This role is responsible for working on high-purity and industrial piping systems that support critical fab infrastructure, including ultra-pure water, chemical delivery, gas distribution, and exhaust systems. The ideal candidate will have experience in commercial and industrial settings, strong blueprint and P&ID reading ability, and hands-on experience with precise installation and welding practices in high-specification environments.

Key Responsibilities

• Read and interpret blueprints, P&IDs, spool drawings, and specifications to understand piping layouts, materials, and system requirements
• Fabricate, assemble, and install piping systems using stainless steel tubing, electropolished tubing, plastics such as PVC and PFA, copper, and other specialty materials
• Perform high-purity welding, including orbital TIG (GTAW) welding, while maintaining proper purge procedures and contamination control standards
• Cut, thread, bend, fit, and join piping to exact tolerances using welding, brazing, compression fittings, mechanical fittings, fused joints, or other approved methods
• Install pipe supports, hangers, brackets, and racks while maintaining proper alignment, slope, and vibration control
• Perform pressure testing, leak detection, flow testing, and visual or automated inspections to verify installation quality and system integrity
• Troubleshoot and repair leaks, misalignments, and integration issues during installation and commissioning
• Maintain cleanroom protocols and contamination control procedures while working in controlled semiconductor environments
• Support specialized systems such as ultra-pure water loops, chemical delivery systems, gas cabinets, bulk gas lines, and exhaust systems
• Pre-fabricate spools or modules off-site when applicable and complete field installation onsite
• Maintain weld logs, material traceability, and quality documentation for project validation and audits
• Assist with flushing, passivation, certification, commissioning, and startup of piping systems
• Collaborate with engineers, electricians, HVAC technicians, tool installers, quality personnel, and apprentices to support project execution and training requirements
• Follow OSHA standards, applicable codes, semiconductor best practices, and site-specific safety procedures

Minimum Qualifications

• High school diploma or GED equivalent
• Successful completion of background check and drug screen
• Valid driver’s license
• Proven experience as a Pipefitter / Welder in commercial and industrial environments
• Ability to read blueprints, schematics, P&IDs, and related construction documents
• Experience testing systems using specialized tools and equipment
• Experience working with high-pressure and chemical systems
• Proficiency with hand tools and pipefitting or welding equipment
• Understanding of construction site operations and safe work practices
• Ability to perform skilled installation, repair, and renovation work in active industrial environments

Preferred Qualifications

• Bilingual in Spanish or Mandarin
• Degree or training in a related field
• Project management experience
• OSHA 30 certification
• Experience in semiconductor, cleanroom, high-purity, or mission-critical environments

Skills

• Pipe fabrication and installation
• High-purity welding and orbital TIG welding
• Blueprint, schematic, and P&ID reading
• Pressure testing and leak detection
• Cleanroom and contamination control awareness
• High-pressure and chemical system support
• Troubleshooting and repair
• Documentation and weld log maintenance
• Collaboration across trades and project teams
• Safety, quality, and detail orientation

Equal Employment Opportunity Statement

Marketech International Corporation USA is an equal opportunity employer and will consider all qualified applicants without regard to race, color, religion, religious creed, sex, national origin, ancestry, age, physical or mental disability, medical condition, genetic information, military and veteran status, marital status, pregnancy, gender, gender expression, gender identity, sexual orientation, or any other characteristic protected by local law, regulation, or ordinance.