Injection Mold Maker

About Moldtronics Moldtronics, Inc. is a privately held contract manufacturer located in Downers Grove, Illinois. Since 1955, we have specialized in custom injection molding, mold making, CNC machining, and manufacturing for customers across the aerospace, defense, medical, agriculture, IOT, and commercial industries.

Position Summary We're seeking an experienced Injection Mold Maker to join our team in a hybrid role that combines mold building with precision CNC machining. You'll work directly with engineering, quality, and production teams to design, build, and maintain plastic injection molds while operating advanced CNC machining equipment.

Key Responsibilities Build and repair plastic injection molds from CAD models, blueprints, and engineering specifications

Operate CNC mills, vertical mills, sinker/orbital EDM machines, and surface grindersCNC Machine precision parts and components to specification

Create your own programs using Mastercam.

Read and interpret blueprints, CAD models, and technical drawings with accuracy

Perform quality inspections using precision measuring equipment

Troubleshoot tooling and part-quality issues in collaboration with engineering and production teams

Assist with other related duties as required or assigned.

Contribute to continuous improvement of mold design and manufacturing processes

Qualifications5+ years of injection mold making and/or mold repair experience.

The ability to build plastic injection molds using mold designs, CAD models, blueprints, and engineering drawings.

Strong knowledge of injection mold construction, operation, maintenance, and repair.

Ability to read and interpret mold designs, blueprints, CAD models, tolerances, and engineering specifications.

Experience with mills, lathes, surface grinders, and standard Tool Room equipment.

Strong precision machining, fitting, inspection, and troubleshooting skills.

Experience working to close tolerances using precision measuring equipment.

CNC experience required.

CAD/CAM experience required.

Ability to work independently or with a team.

Compensation & Schedule $30.00–$45.00 per hour, depending on experience and skills.

Full-time Monday–Friday7:00 AM–4:00 PMOn-site in Downers Grove, Illinois Overtime may be available based on production needs.

Benefits Moldtronics offers a comprehensive benefits package, including:

Medical, dental, vision, and prescription drug coverage

Health Savings Account (HSA)401(k) with company match

Company-paid basic life insurance

Disability insurance
10 Paid holidays

Paid time off Employee Assistance Program (EAP)
Employee referral program

Moldtronics, Inc. is an Equal Opportunity Employer.

You should be proficient in:

Mechanical Troubleshooting Skills Manual Machining Skills Tool/Die/Mold Repair Skills Injection Molding Experience Blueprint Reading Close-Tolerance MachiningCNC MachiningEDM Machining Injection Mold Design Injection Mold Making / Mold Making Mold Building / Mold Construction Mold Fitting & Assembly Mold Troubleshooting Machines & technologies you'll use:

CNC Mill (3-4 axis VMC) (Haas)
Surface Grinder (Okamoto)
CNC Lathe (2-4 axis) (Haas)
Manual Vertical Mill (Bridgeport)
CAD Software (Solidworks)
CAM Software (Mastercam)
CNC Lathe (2–4 Axis)
EDM – Sinker EDM