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Mastermold Jobs (NOW HIRING)

MasterMold LLC

Senior Cost Accountant

Johnson Creek, WI · On-site

$81K - $101K/yr

Company Description MasterMold, LLC, located in Johnson Creek, WI, is an established composite molder, painter and assembler of many OEM products across a diverse set of industries. We have a ...

MASTER MOLD LLC

Area Lead

Mauston, WI · On-site

MasterMold is looking for a motivated and dependable Team Lead to support employees within our Paint Department on first shift. This role is critical in helping maintain production flow, supporting ...

MASTER MOLD LLC

Production Supervisor

Johnson Creek, WI · On-site

MasterMold is growing and we're building the next generation of manufacturing leaders to grow with us. We are actively seeking Production Supervisors to lead critical operations across Press, Paint ...

MASTER MOLD LLC

QUALITY ENGINEER

Mauston, WI · On-site

$80K - $103K/yr

MasterMold is seeking a detail-oriented and motivated First Shift Quality Engineer to support manufacturing operations, improve process performance, and help ensure our products meet company ...

Mastermold LLC

PAINTLINE MAINTENANCE

Johnson Creek, WI · On-site

$17 - $22/hr

MasterMold is seeking a dependable and hard-working employees to perform deep cleaning of the paint line on the overnight shift every Friday, Saturday, and Sunday night. This role is focused ...

Mastermold LLC

Quality Technician

Johnson Creek, WI · On-site

$18 - $24.25/hr

The Quality Technician plays a crucial role in ensuring that products meet established quality, safety, customer, and regulatory requirements within a durable goods manufacturing environment. This ...

Mastermold LLC

Quality Technician

Johnson Creek, WI · On-site

$18 - $24.25/hr

The Quality Technician plays a crucial role in ensuring that products meet established quality, safety, customer, and regulatory requirements within a durable goods manufacturing environment. This ...

Mastermold LLC

Paint Process Engineer

Johnson Creek, WI · On-site

$90K - $108K/yr

We're looking for Paint Process Engineers to own, stabilize, and improve our paint and coating processes. This role is less about "babysitting the line" and more about building robust processes that ...

Mastermold LLC

PRESS OPERATOR

Mauston, WI · On-site

$20/hr

Position Summary: We are seeking a reliable and detail-oriented Production Operator to perform the combined duties of Paint Support and Press Operator . This position will play a vital role in ...

Mastermold LLC

Paint Process Engineer

Johnson Creek, WI · On-site

$90K - $108K/yr

We're looking for Paint Process Engineers to own, stabilize, and improve our paint and coating processes. This role is less about "babysitting the line" and more about building robust processes that ...

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What is a Mastermold job?

A Mastermold job typically involves overseeing and managing the design, production, and maintenance of industrial molds, often used in manufacturing processes such as injection molding or casting. This role requires expertise in mold fabrication, materials, and precision engineering to ensure high-quality production. Mastermolds are crucial for creating consistent and accurate components for various industries, including automotive, aerospace, and consumer goods. Responsibilities may also include troubleshooting mold defects, improving efficiency, and collaborating with engineers and production teams.

What are the typical daily responsibilities for someone working as a Mastermold?

A typical day for a Mastermold involves overseeing the setup, inspection, and maintenance of molds used in injection molding operations. You will troubleshoot mold performance issues, ensure consistent product quality, and collaborate closely with machine operators, engineers, and quality assurance teams. Mastermolds are also responsible for making adjustments to process parameters, maintaining detailed production records, and supporting continuous improvement initiatives on the production floor. This role requires a mix of technical proficiency and teamwork to keep manufacturing operations running smoothly and efficiently.

What are the key skills and qualifications needed to thrive in the Mastermold position, and why are they important?

To thrive as a Mastermold, you need in-depth expertise in injection molding processes, mold design, and quality control, typically supported by technical training or experience in plastics manufacturing. Familiarity with CAD software, CNC machines, and industry-standard inspection tools is often required, along with certifications such as RJG Master Molder or similar credentials. Exceptional problem-solving skills, attention to detail, and effective communication facilitate success in this hands-on, production-driven role. These capabilities ensure efficient mold operation, high product quality, and strong collaboration within manufacturing teams.

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Mastermold jobs near you
Infographic showing various Mastermold job openings in the United States as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.
Supply Chain Analyst/Buyer

Supply Chain Analyst/Buyer

Mastermold LLC

Johnson Creek, WI • On-site

Full-time

Posted 23 days ago

Job description

MasterMold is looking for a proactive, detail-oriented Supply Chain Analyst / Buyer to join our team. This role is a strong fit for someone who enjoys staying organized, solving problems, and helping keep a manufacturing operation running smoothly.

As part of our Purchasing team, this position will coordinate with Production, Engineering, Finance, and suppliers to ensure needed materials are available. Main duties include supporting purchasing activities, tracking inventory, addressing supply issues, and maintaining daily operations.

If you are someone who likes staying ahead of problems, working across teams, and making a direct impact on operations, we encourage you to apply.

Responsibilities:

  • Support purchasing activities for raw materials, production supplies, tooling, and equipment
  • Work closely with the Purchasing department to help manage supply needs and inventory levels
  • Follow up on open purchase orders and supplier deliveries
  • Communicate supply risks, delays, and changes that could impact production
  • Help maintain accurate purchasing and inventory records
  • Partner with internal teams and suppliers to support production demands


Qualifications:

  • Experience in purchasing, buying, supply chain, inventory control, or materials planning
  • Strong organizational, communication, and follow-up skills
  • Ability to manage multiple priorities in a fast-paced environment
  • Manufacturing experience preferred
  • ERP, accounting, or inventory system experience preferred


Work Environment:

  • Office-based role with regular time in the warehouse and on the manufacturing floor
  • Travel between Johnson Creek and Mauston as needed
  • Occasional supplier visits or audits may be required