Injection Molding Process Engineer

Masis Professional Group is seeking Injection Molding Process Engineer to work in the Rochester, NH area.

This is a 1st shift, direct hire opportunity.

• Develop, document, and implement molding processes for new and existing products.
• Establish and maintain standard process parameters to ensure consistent product quality and cycle times.
• Lead trials for new molds, materials, and equipment, ensuring readiness for full-scale production.
• Lead lean manufacturing and Six Sigma projects to reduce waste, improve efficiency, and enhance product quality.
• Identify and recommend equipment upgrades, automation opportunities, and new technology adoption.
• Train and mentor process technicians and operators on best practices.

• Analyze and resolve molding issues such as dimensional inconsistencies, surface defects, or material flow problems.
• Support production teams with technical guidance and root cause analysis for process-related downtime.
• Collaborate with suppliers to address tooling or material concerns.

• Bachelor’s degree in Mechanical Engineering, Manufacturing Engineering, Plastics Engineering, or related field (or equivalent work experience).
• 3–5 years of experience in injection molding process engineering, preferably in a manufacturing environment.
• Knowledge of various thermoplastics and molding machine technologies.
• SCI Molding Training (RJG or AIM).
• Experience with Toyo Plastar or Engel Victory machines.

• Ability to work in a manufacturing environment with exposure to heat, noise, and moving machinery.
• Ability to stand, walk, and perform hands-on technical work for extended periods.