Sr. Injection Molding Technician

Sanmina; Town of Turtle Lake (WI); On-site; USD 42,000 - 66,000; Full time

Job summary

Sanmina is seeking a Sr. Injection Molding Technician to support machine setup, calibration, and process optimization in a manufacturing environment in Wisconsin.

You will work with engineers on line tests, perform rework and quality testing, and help drive consistent part quality across assemblies. Responsibilities include setting up machines, adjusting process controls, monitoring cycle times, and documenting changes.

Qualifications

• Associate's degree or technical certifications in plastics processing preferred.
• 2–4 years of hands-on mold setup, tooling procedures, and machine processing experience.
• Familiarity with blueprint reading and PLC controllers is desirable.

Responsibilities

• Set up machines and changeovers for production runs.
• Calibrate parameters (temperature, pressure, injection speed) per specs.
• Monitor cycle times and part dimensions to stay within tolerances.
• Inspect parts with precision tools and document results.
• Maintain a clean, safe work area following OSHA standards.

Skills

Mold setup

Tooling procedures

Machine processing

Blueprint reading

PLC knowledge

Education

Associate's degree

Technical certifications

Tools

PLC controllers

Job description

Job Description

Job Purpose

Works with engineers in set-up, calibration tests and conducting experiments. Perform rework and quality testing related to the production of parts, components, subassemblies and final assemblies. Use sophisticated programs to collect and evaluate operating data to conduct on-line adjustments to products, instruments or equipment.

Determines and may assist in developing methods and procedures to control or modify the manufacturing process. Performs functions associated with all manufacturing operations. May include drill presses, milling machines, pad printing machines, hot stamping machines, sonic welders, assembly stations and other various machines and equipment.

• Prepare machines for production by installing, aligning, and securing molds and tooling using hoists and hand tools.
• Calibrate operational parameters such as temperature, pressure, clamp force, and injection speed according to product specifications.

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.

Sr. Injection Molding Technician, M-F 7am - 3pm

Job Purpose

Works with engineers in set-up, calibration tests and conducting experiments. Perform rework and quality testing related to the production of parts, components, subassemblies and final assemblies. Use sophisticated programs to collect and evaluate operating data to conduct on-line adjustments to products, instruments or equipment.

Determines and may assist in developing methods and procedures to control or modify the manufacturing process. Performs functions associated with all manufacturing operations. May include drill presses, milling machines, pad printing machines, hot stamping machines, sonic welders, assembly stations and other various machines and equipment.

Key Responsibilities

Machine Setup & Changeovers

• Prepare machines for production by installing, aligning, and securing molds and tooling using hoists and hand tools.
• Calibrate operational parameters such as temperature, pressure, clamp force, and injection speed according to product specifications.

Process Optimization & Troubleshooting

• Monitor production runs to ensure cycle times and part dimensions meet tolerances.
• Troubleshoot machine errors and molding defects (e.g., flash, short shots, sink, and warpage) by adjusting process controls.
• Execute machine start-up and shut-down procedures safely.

Quality Control

• Inspect parts visually and use precision measuring instruments (like calipers and micrometers) to verify product conformity.
• Document process changes, fill out setup sheets, and maintain accurate production logs.

Equipment Maintenance & Safety

• Perform routine preventive maintenance on injection molding machines and auxiliary equipment (e.g., dryers, chillers, and temperature control units).
• Ensure a clean and organized workspace, adhering strictly to OSHA and company safety standards.

Core Requirements & Qualifications

• Education: Associate's Degree and/or technical certifications or vocational training in plastics processing are highly preferred.
• Experience: 2-4 years of hands-on experience in mold set-up, tooling procedures, and machine processing.
• Technical Skills: Familiarity with scientific molding/decoupled molding principles, blueprint reading, and PLC controllers.
• Physical Requirements: Ability to stand for long periods, walk, bend, and lift/move heavy materials or tools (typically up to 30 to 50 lbs).

Sanmina is an Equal Opportunity Employer