CNC Moldmaker / Programmer

Opti Staffing Group; Oregon; On-site; USD 60,000 - 85,000; Full time

Job summary

Opti Staffing Group in Clackamas, OR is seeking a CNC Moldmaker/Programmer with Mastercam experience to join our precision moldmaking shop. You will program CNC mills, develop 2D and 3D toolpaths, and machine high-precision mold components from complex CAD data.

This full-time role offers overtime as needed, hands-on mentoring from experienced moldmakers, and opportunities to advance expertise in plastic injection, compression, and die cast tooling.

Qualifications

• High school diploma or equivalent.
• Proven experience programming CNC machines using Mastercam.
• Minimum 1 year of CNC milling experience in a precision machining environment.
• Strong understanding of shop math, geometry, trigonometry, and machining principles.
• Ability to work from complex CAD data and maintain close tolerances.

Responsibilities

• Program CNC machines using Mastercam (2D & 3D toolpaths required) to machine high-precision mold components from complex CAD models.
• Develop efficient machining strategies including roughing, semi-finishing, and finishing toolpaths.
• Set up and operate CNC mills, including high-speed machining equipment.
• Collaborate in kick-off meetings to plan mold build strategies, programming approaches, and machining sequences.
• Optimize programs for accuracy, surface finish, cycle time, and tool life.
• Prepare and interpret sketches, 2D/3D CAD data, and detailed job instructions.
• Inspect machined components to ensure tight tolerances before releasing to the next stage.
• Complete documentation and paperwork for mold assembly and job tracking.
• Operate multiple machines and assist with shop support tasks such as shipping/receiving when needed.
• Maintain a clean, organized, and safety-focused work environment.
• Communicate machine issues, tooling needs, and workflow updates to supervisors and team members.

Skills

Mastercam programming

CNC milling

2D toolpaths

3D toolpaths

Attention to detail

Education

High school diploma or equivalent

Tools

Mastercam

Job description

Opti Staffing is Hiring! Position: CNC Moldmaker / Programmer (Mastercam) Location: Clackamas, OR Pay: Competitive, DOE Schedule: Full-time, with overtime as required by customer needs

Who We Are

We are a precision moldmaking shop in Clackamas, OR, focused on high-quality, customer-driven tooling solutions. Our team specializes in plastic injection molds, compression molds, and die cast dies, producing complex, high-precision tooling directly from 3D CAD data. We value craftsmanship, technical skill, and collaboration, and we are seeking a CNC Moldmaker/Programmer with strong Mastercam programming experience to join our team.

What You’ll Do

Program CNC machines using Mastercam (2D & 3D toolpaths required) to machine high-precision mold components from complex CAD models. Develop efficient machining strategies including roughing, semi-finishing, and finishing toolpaths. Set up and operate CNC mills, including high-speed machining equipment. Collaborate in kick-off meetings to plan mold build strategies, programming approaches, and machining sequences. Optimize programs for accuracy, surface finish, cycle time, and tool life. Prepare and interpret sketches, 2D/3D CAD data, and detailed job instructions. Inspect machined components to ensure tight tolerances before releasing to the next stage. Complete documentation and paperwork for mold assembly and job tracking. Operate multiple machines and assist with shop support tasks such as shipping/receiving when needed. Maintain a clean, organized, and safety-focused work environment. Communicate machine issues, tooling needs, and workflow updates to supervisors and team members.

What’s In It for You

A programming-focused role where Mastercam skills are used daily. Opportunity to deepen expertise in complex 3D mold programming and machining strategies. Hands-on exposure to plastic injection, compression, and die cast moldmaking. Team-oriented environment with advancement opportunities for skilled programmers. Direct mentorship from experienced moldmakers and programmers. Overtime opportunities based on customer delivery requirements.

What You Need to Have

High school diploma or equivalent. Proven experience programming CNC machines using Mastercam (required). Minimum 1 year of CNC milling experience in a precision machining environment. Strong understanding of shop math, geometry, trigonometry, and machining principles. Ability to work from complex CAD data and maintain close tolerances. Computer skills for programming, documentation, and inter-office communication.

The Musts

Hands-on Mastercam programming experience (2D & 3D toolpaths is mandatory). Strong problem-solving and troubleshooting abilities. High attention to detail with pride in precision workmanship. Ability to stand for extended periods and lift 50+ pounds (with equipment for heavier loads). Clear written and verbal communication skills. Team-oriented mindset with a strong work ethic and reliability.

Preferred Experience

Programming complex 3D surfaces and mold components in Mastercam. Prior moldmaking experience (plastic injection, compression, or die cast). High-speed machining experience and tooling knowledge. Experience optimizing programs for cycle time and surface finish.