Journeyman CNC Maintenance & Repair Technician

Sanmina Corporation; Newark (CA); On-site; USD 65,000 - 90,000; Full time

Job summary

Sanmina Newark, California, is seeking a highly skilled Journeyman CNC Maintenance Technician to lead expert-level troubleshooting, diagnostics, repair, and preventative maintenance of Niigata and Mazak machine tools in a fast-paced production environment.

You will work closely with CNC operators and production management to minimize downtime while ensuring safety, documentation, and continuous improvement in maintenance procedures.

Qualifications

• Minimum 5+ years of industrial machine maintenance experience, journeyman-level.
• At least 3 years direct experience repairing Niigata and Mazak CNC equipment.
• Strong ability to read electrical, mechanical, hydraulic, and pneumatic schematics.

Responsibilities

• Troubleshoot & repair complex mechanical, electrical, pneumatic, and hydraulic issues on Niigata and Mazak CNC machinery down to component level.
• Perform scheduled preventative maintenance and identify potential failures to minimize downtime.
• Troubleshoot CNC control systems, servo drives, spindle drives, PLCs, and sensors; work with Mazatrol and Fanuc controls.

Skills

Journeyman maintenance

Niigata repair

Mazak repair

Electrical & mechanical diagnostics

Mazatrol

Fanuc

Troubleshooting

Education

High School Diploma or equivalent

AS Degree in Engineering/Industrial Maintenance

Tools

Diagnostic equipment

Calipers & micrometers

PLC & servo drive diagnostics

Job description

Sanmina Corporation (Nasdaq: SANM) is a leading integrated manufacturing solutions provider serving the fastest-growing segments of the global Electronics Manufacturing Services (EMS) market. Recognized as a technology leader, Sanmina Corporation provides end-to-end manufacturing solutions, delivering superior quality and support to Original Equipment Manufacturers (OEMs) primarily in the communications networks, defense and aerospace, industrial and semiconductor systems, medical, multimedia, computing and storage, automotive and clean technology sectors. Sanmina Corporation has facilities strategically located in key regions throughout the world.

Specializing in precision machining and metal fabrication, our Sanmina Newark, California facility has 16 years experience in both precision and large format solutions for industrial, semiconductor, clean technology and oil & gas markets. We provide comprehensive engineering and test capabilities: from in-house and hydrostatic leak-testing of medium and large format vacuum chambers to machining of precision stainless steel mechanisms. We have the capacity to machine components up to 3 meters. Our metal fabrication services include grinding, vacuum welding, heat treating, plating and anodizing. We can process many advanced materials, including aluminum, stainless steel, plastics, ferrous-non ferrous and other exotic alloys.

Job Purpose:

We are seeking a highly skilled and experienced Journeyman CNC Maintenance Technician to join our team. This role is responsible for the expert-level troubleshooting, diagnostic testing, repair, and preventative maintenance of our industrial CNC machine tools, with a primary focus on Niigata and Mazak equipment (including multi-axis mills, lathes, and machining centers).

The ideal candidate will possess advanced electrical, mechanical, hydraulic, and pneumatic aptitude, ensuring maximum equipment uptime, reliability, and safety in a fast-paced production environment.

Key Responsibilities

• Troubleshooting & Repair: Independently diagnose and repair complex mechanical, electrical, pneumatic, and hydraulic issues on Niigata and Mazak CNC machinery down to the component level.
• Preventative Maintenance (PM): Execute scheduled and comprehensive preventative maintenance programs for all assigned CNC equipment. Identify potential failures and proactively replace parts to minimize machine downtime.
• Controls & Electronics: Troubleshoot and repair CNC control systems, servo drives, spindle drives, PLCs, and field sensors. Must have strong proficiency with Mazatrol, Fanuc, and other associated control systems used on Mazak and Niigata platforms.
• Mechanical Systems: Repair and align machine tool mechanical systems, including ball screws, linear rails, guideways, gearboxes, and tool changers.
• Documentation: Maintain accurate, up-to-date service records, PM logs, and compliance documentation.
• Continuous Improvement: Develop and update preventative maintenance procedures using technical manuals, electrical/mechanical schematics, and vendor resources.
• Safety & Compliance: Strictly adhere to all facility safety protocols, lock-out/tag-out (LOTO) procedures, and PPE requirements. Safely handle and dispose of hazardous materials and machine chemicals.
• Collaboration: Work closely with CNC operators, programmers, and production management to understand equipment issues, schedule repairs without heavily impacting production, and train operators on basic daily maintenance tasks.

Qualifications & Requirements

• Experience: Minimum of 5+ years of industrial machine maintenance experience, with a proven track record as a journeyman-level technician. Must have at least 3 years of direct, hands‑on experience repairing and maintaining Niigata and Mazak CNC equipment.
• Technical Skills:
• Expertise in reading and interpreting complex electrical, mechanical, hydraulic, and pneumatic blueprints and schematics.
• Strong working knowledge of Mazatrol and Fanuc control systems (parameter adjustments, servo tuning, electronic repair).
• Proficiency using specialized diagnostic equipment, precision measuring tools (calipers, micrometers), and standard hand/power tools.
• Education: High School Diploma or equivalent required. AS Degree in Engineering, Industrial Maintenance, or advanced technical certifications in CNC machine repair are highly preferred.
• Soft Skills: Strong analytical math skills, excellent problem-solving abilities, and a high degree of self-motivation. Must be able to work independently with minimal supervision and respond with urgency to machine-down situations.
• Physical Demands: Ability to lift heavy components, stand for extended periods, and maneuver around, under, and inside large industrial machinery.

Sanmina is an Equal Opportunity Employer – M/F/Veteran/Disability/Sexual Orientation/Gender Identity

This is an ITAR facility and applicant must be a US Citizen or a lawful permanent resident.