Quality Control Supervisor (Injection Moulding)

Dutton Plastics Engineering is a major producer of, among other things, high quality Plumbing Products [cisterns, toilet seats, traps, wastes and mechanisms] and Packaging Products [Spray through Aerosol and dust caps including Actuators] and is based at Alrode industrial area in Alberton, some 22km southeast of Johannesburg, Gauteng Province. It employs plus minus 220 permanent employees nationally with a branch in Cape Town.

We are currently seeking a highly skilled and detail-oriented Quality Control Supervisor to lead our QC team.

If you have deep technical knowledge of plastic injection moulding processes and a passion for driving zero-defect standards, we want you on our team.

Job Purpose

A Quality Control Supervisor oversees inspection teams, enforces product and safety standards, and ensures that manufacturing or processing operations comply with regulatory and company requirements.

• Team Supervision: Schedule, train, mentor, and upskill a team of QC inspectors  across rotating shifts. Monitor employee attendance, performance, conduct and productivity.
• Meetings: Attend QC meetings and production meetings, chairing QC sessions in the absence of the Quality Manager.
• Inspections & Testing: Oversee the inspection of incoming raw materials, in-process assembly/production lines, and final packaged goods.
• Mould Start-Up & Trial Validation: Review new mould trial reports alongside the Toolroom team to validate process settings.
• Tool & Gauge Calibration: Maintain and track an updated calibration matrix for testing tools and equipments, including micrometers, vernier calipers, and gauges
• Traceability: Maintain shift logs, batch documentation, and material traceability records in line with our QMS
• Defect Troubleshooting: Monitor production lines to immediately identify and resolve moulding defects (e.g., flash, sink marks, short shots, splay, and warping).
• Non-Conformance Management: Isolate non-conforming products, coordinate rework or safe disposal, and lead root-cause analysis investigations, and implement Corrective and Preventive Actions (CAPA) to drive down plant scrap rates.
• Quality Management Systems (QMS): Maintain, review, and update Standard Operating Procedures (SOPs), and regulatory compliance records.
• Auditing & Compliance: Lead/participate in internal and external audits, manage corrective and preventive actions (CAPA), and report to upper management.
• COC’S ; Compile product certificates of conformance /COC’S as and when needed.

• Education: Grade 12 (Matric) plus a relevant technical qualification, preferably in plastics manufacturing. 
• Experience: Minimum of 3 to 5 years of QC experience strictly within a plastic injection moulding environment, with at least 2 years in a supervisory quality control role.
• Technical Skills:
  • Proven ability to interpret complex technical engineering drawings and blueprints.
  • Hands-on proficiency with precision measuring instruments (micrometers, calipers, height gauges).
  • Strong understanding of injection moulding machinery, and raw polymer materials (virgin vs. regrind).
• Systems: Familiarity with ISO 9001 standards, or Lean Six Sigma and Statistical Process Control (SPC) and 6S Housekeeping
• Attributes: High visual acuity (perfect colour vision is essential), excellent problem-solving skills, and a firm but collaborative leadership style.

• Skills: Strong analytical thinking, attention to detail, leadership, problem-solving, and proficiency in MS Office or quality data systems.

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