Mold Maintenance Technician

Performs preventive maintenance, cleaning, inspection, and basic repair of precision injection molds. Supports dependable mold operation and availability while working with experienced tooling personnel on increasingly complex maintenance activities.

Company Information

Heico has a history of success. Since its founding over 40 years ago, The Heico Companies has grown from a single business to over 78 separate companies through a strategic acquisition policy and by reinvesting its earnings into internal growth and new prospects. Historically talented at restoring distressed companies, Heico strategically targets acquisitions that complement its ever-growing portfolio of companies in manufacturing, construction, and industrial services.

These four core operations are organized into groups: Applied Solutions Group, Construction Solutions Group, Industrial Technologies Group, and Metal Processing Group. Once acquired, new Heico companies are assigned to a group and run on a stand-alone basis, allowing for great independence as well as the opportunity to share knowledge about markets, production processes, and management practices across other Heico groups and companies.

Heico continues to seek out new opportunities and maintain its standard of success. The Heico Companies has remained a privately held company since its creation and maintains a majority ownership in each of its operations, which generate more than $3.3 billion in annual revenues. Many of our businesses are certified Woman-Owned Business Enterprises (WBE).

More information about the overall organization can be found at


The Company


Kleiss High Precision, a member of The Heico Companies' Plastics Segment, is a U.S.-based precision injection molding company specializing in tight-tolerance plastic components for demanding applications. The company combines advanced molding technologies, micro-molding capabilities, robust quality systems, and extensive experience processing high-performance engineering polymers to support customers from prototype through production. Operating from Grantsburg, Wisconsin and certified to ISO 9001:2015, Kleiss High Precision partners with customers across medical, industrial, and other regulated markets to deliver complex molded components with consistent quality, reliable performance, and responsive program support.


Position Summary


Performs preventive maintenance, cleaning, inspection, and basic repair of precision injection molds. Supports dependable mold operation and availability while working with experienced tooling personnel on increasingly complex maintenance activities.


Essential Responsibilities


• Disassemble, clean, inspect, lubricate, and reassemble injection molds according to established procedures.


• Inspect cavities, cores, slides, ejector systems, and related mold components for wear, damage, and contamination.


• Perform basic adjustments, component replacements, and repairs within demonstrated capabilities.


• Identify issues requiring advanced repair or engineering evaluation and communicate findings.


• Assist toolmakers with troubleshooting, repairs, and preventive maintenance improvements.


• Maintain accurate mold service records and keep tools and the work area organized and safe.


• Support timely mold readiness for scheduled production.


Qualifications


• Strong mechanical aptitude and experience with hands-on equipment repair, mechanical assembly, maintenance, or related work.


• Comfort using hand tools, basic shop equipment, and measuring instruments.


• Ability to follow technical instructions and work carefully with precision components.


• Reliability, attention to detail, and interest in developing specialized technical skills.


• Prior injection mold maintenance or toolroom experience preferred but not required.


Role Boundary


Advanced mold fabrication, precision machining, major rebuilds, and complex engineering changes remain with qualified toolmakers and tooling engineering personnel.


EOE M/F/D/V