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.

Pay: $31.00 - $38.00 per hour

Benefits:

401(k)
Dental insurance
Health insurance
Life insurance
Paid time off
Relocation assistance
Vision insurance

Application Question(s):

How many years of experience do you have working as a Pipefitter / Welder in commercial or industrial environments?
Do you have experience in the semiconductor industry or with high-purity piping systems, including blueprint/P&ID reading and welding or installing stainless steel, chemical, gas, or UPW piping?

Location:

Phoenix, AZ 85085 (Required)

Work Location: In person

MICU – Marketech International Corp. USA jobs

Pipefitter / Welder | Semiconductor Industry

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