Quality Control Supervisor

About this role

The role is for a Quality Control Supervisor based in Lagos, employed full-time by PET Preform and Bottles Manufacturing Company. The position oversees quality control across raw materials, PET preform and bottle production, laboratory testing, finished products, and product release. The supervisor ensures compliance with approved specifications, drives defect prevention, and supports continuous improvement. Key tasks include monitoring product parameters, coordinating lab testing, handling customer quality complaints, reviewing test reports, and managing quality records and CAPA actions. The role requires collaboration with multiple departments and hands-on supervision of QC activities. Prior PET preform/bottle production quality control experience is strongly preferred.

What you would do

• Monitor critical PET product parameters (weight, dimensions, neck finish, wall thickness, capacity, appearance, colour, clarity).
• Coordinate laboratory testing (weight, dimensions, leakage, top-load, burst/pressure, drop/impact, and other tests).
• Investigate customer quality complaints and perform root-cause analysis with corrective actions.
• Review COAs, COCs, inspection results and test reports.
• Investigate quality failures using 5 Why, Fishbone/Ishikawa, Pareto, CAPA and PDCA methodologies.
• Maintain QC records, NCRs, CAPA records, test results and quality KPIs.
• Ensure compliance with approved quality procedures, specifications, and standards.
• Conduct and supervise in-process, first-off, changeover and final product inspections.
• Supervise inspection and verification of incoming raw materials (PET resin, masterbatch, additives, preforms, packaging).
• Oversee finished product inspection, product release, batch traceability and retention samples.

What they are asking for

• High integrity, attention to detail, accountability and commitment to quality.
• BSc/HND in Chemistry, Industrial Chemistry, Biochemistry, Microbiology, Chemical Engineering, Polymer/Materials Science, Food Science, Quality Management or related field.
• Knowledge of ISO/QMS and quality improvement tools.
• Proficiency in Microsoft Office and quality documentation systems.
• Willingness to work across production, lab, warehouse and other areas.
• Experience supervising QC personnel and managing non-conformities, CAPA, customer complaints and documentation.
• Proven experience in PET preform/bottle production and quality control preferred.
• Strong analytical, problem-solving, leadership, communication and decision-making skills.
• 3–5 years relevant experience in PET bottle/preform manufacturing or related fields.

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