Senior Injection Mold Maker

About the role

Connexion Systems & Engineering in Leominster, MA is seeking an experienced Senior Injection Mold Maker to join its tooling team. This hands‑on role involves building, repairing, troubleshooting, and optimizing complex plastic injection molds for medical device and advanced industrial applications in a quality‑focused, technical manufacturing environment.

Responsibilities

• Build, fit, assemble, and troubleshoot precision plastic injection molds
• Perform mold repairs, engineering changes, preventive maintenance, and refurbishments
• Diagnose tooling issues and implement corrective actions to improve mold performance and reliability
• Machine mold components using manual and CNC toolroom equipment
• Operate mills, lathes, surface grinders, EDM equipment, and related machinery
• Inspect mold components and verify critical dimensions to tight tolerances
• Assemble and test molds for proper fit, function, cooling, and ejection
• Work with cores, cavities, slides, lifters, ejector systems, cooling circuits, and mold mechanisms
• Read and interpret blueprints, engineering drawings, and CAD‑generated prints
• Support mold sampling, qualification, and production activities
• Document repairs, modifications, inspections, and tooling improvements
• Partner with Engineering, Tooling, Maintenance, and Production to improve manufacturability and mold performance
• Contribute to continuous improvement initiatives focused on efficiency, quality, and tooling reliability
• Maintain a safe, clean, and organized work environment

Requirements

• 5+ years of hands‑on Mold Maker experience in a plastic injection molding environment
• Proven experience building, repairing, maintaining, and troubleshooting injection molds
• Strong understanding of injection mold construction and function
• Experience with cores and cavities, slides and lifters, ejector systems, cooling circuits, mold actions and mechanisms
• Ability to read and interpret blueprints, engineering drawings, and CAD‑generated prints
• Hands‑on experience operating manual and CNC milling machines, lathes, surface grinders, EDM equipment
• Strong mechanical troubleshooting and problem‑solving skills
• Ability to work independently while maintaining high standards for quality and precision
• High school diploma or GED
• Ability to read and comprehend work instructions in English

Preferred Qualifications

• Technical trade school certification or apprenticeship training
• Experience with SolidWorks, Mastercam, or similar CAD/CAM software
• Experience supporting medical devices or other highly regulated manufacturing environments
• Knowledge of mold design, manufacturability, and tooling optimization
• Experience with tight‑tolerance precision tooling

Benefits

• Health, dental, and vision insurance (if converted to direct hire)
• 401(k) with company match (if converted to direct hire)
• Paid vacation and holidays (if converted to direct hire)
• Relocation assistance available for qualified candidates

Pay

$40–$55 per hour, depending on experience (DOE). Temp‑to‑perm or direct‑hire opportunity.

Schedule

First shift: Monday – Friday, 7:00 AM – 3:00 PM (100% onsite).