Injection Mold Supervisor

RNInk; McDonough (GA); On-site; USD 75,000 - 95,000; Full time

Job summary

RNInk seeks an experienced Injection Molding Supervisor to oversee daily injection molding operations at a startup manufacturing facility in McDonough, GA. You'll lead hands-on production, ensure safety, quality, and productivity, and drive process improvements across first and second shifts.

You will supervise machine setups, troubleshoot defects, coordinate with maintenance and tooling, and help establish SOPs and standardized practices to support scale-up and on-time delivery.

Qualifications

• 3–5+ years of progressive experience in injection molding operations.
• Experience supervising production teams or leading a shift.
• Bachelor's degree in Plastics Engineering or related field (or equivalent hands-on experience).

Responsibilities

• Supervise daily injection molding operations to meet schedules, quality standards, and efficiency goals.
• Provide hands-on leadership, training, and technical support to operators across assigned operations.
• Oversee machine startups, mold changes, and equipment changeovers to minimize downtime.
• Monitor performance metrics and drive continuous improvement initiatives.

Skills

Injection molding

Team leadership

Process troubleshooting

Mold changes

SOP development

Education

Bachelor's degree in Plastics Engineering

Tools

Robotics

Automation equipment

Job description

We are seeking an experienced Injection Molding Supervisor to oversee daily injection molding operations within a startup manufacturing facility operating first and second shifts.

This position will play a key role in establishing efficient production processes, supporting equipment startup, and ensuring consistent standards for safety, quality, and productivity.

The Injection Molding Supervisor will provide hands‑on technical leadership, oversee production personnel, troubleshoot equipment and process issues, and coordinate with cross‑functional teams to support operational readiness and production goals.

The ideal candidate is a hands‑on manufacturing leader with strong injection molding experience, technical troubleshooting skills, and the ability to help establish and improve processes in a growing manufacturing environment.

Key Responsibilities

Production Operations & Leadership

• Supervise daily injection molding operations, ensuring production schedules, quality standards, and efficiency goals are met.
• Provide direction, training, and technical support to production personnel across assigned operations.
• Oversee machine setups, startups, mold changes, and equipment changeovers to minimize downtime.
• Monitor production performance, cycle times, material usage, and process consistency.
• Support the development and implementation of standard operating procedures (SOPs) within the startup facility.

Process Control & Troubleshooting

• Monitor and optimize injection molding parameters, including temperature, pressure, speed, cooling time, and cycle time.
• Troubleshoot molding defects such as short shots, flash, sink marks, warpage, burn marks, and weld lines.
• Identify opportunities to improve production efficiency, reduce scrap, and maintain consistent product quality.
• Coordinate with Maintenance and Tooling teams to resolve equipment, robotic, hydraulic, electrical, and mold-related issues.

Quality, Safety & Continuous Improvement

• Ensure proper handling, drying, blending, and traceability of thermoplastic materials and regrind.
• Maintain compliance with established quality standards and production specifications.
• Enforce workplace safety procedures, including Lockout/Tagout (LOTO), machine guarding, and 5S standards.
• Support continuous improvement initiatives focused on safety, productivity, quality, and waste reduction.
• Assist with employee training, process documentation, and operational improvements as production expands.

Qualifications & Experience

• 3–5+ years of progressive experience in injection molding operations, including hands‑on process troubleshooting and mold changes.
• Previous supervisory, team lead, or demonstrated production leadership experience preferred.
• Strong technical knowledge of injection molding machines, molds, robotics, and auxiliary equipment.
• Proven ability to identify and correct molding defects, optimize cycle times, and improve process efficiency.
• Working knowledge of thermoplastic materials, resin handling, and material controls.
• Experience supporting production startups, equipment installations, or new manufacturing processes preferred.
• Automotive manufacturing experience is a plus.
• Bachelor's degree in Plastics Engineering, Manufacturing, or a related field preferred; equivalent hands‑on experience will be considered.
• Startup manufacturing facility establishing production operations and processes.
• Facility will operate first and second shifts, Monday through Friday.
• Position requires onsite presence and flexibility to support production needs across shifts.
• Hands‑on manufacturing environment requiring regular interaction with production equipment, personnel, and cross‑functional teams.