Margareth Nkosi

Senior Compounder and Process Operator with over 13 years of manufacturing experience at Revlon SA, specialising in chemical operations, raw material handling, and end-to-end product manufacturing. Skilled in reverse osmosis (RO) water treatment systems, including pump operation, membrane performance, pre-treatment chemical dosing, and CIP processes, with a strong focus on process monitoring, quality control, and system maintenance. Trusted for leadership in training and mentoring new operators, driving innovation, and upholding safety compliance, with hands-on expertise in GMP, 5S/6S implementation, and ISO audit preparation.

Recipient of the Revlon Global Recognition Award for Innovation and the only female process operator in the company; active contributor across multiple operational excellence and safety committees.

Senior Compounder / Process Operator - Revlon SA - Johannesburg, South Africa

(2015-01 - 2025-01)

Senior Compounder and Process Operator with specialisation in chemical operations, raw material handling, and end-to-end product manufacturing. Responsible for reverse osmosis (RO) water treatment systems, pump operation, membrane performance, pre-treatment chemical dosing, and CIP processes.

• Conducted training for process operators, covering everything from pre-weighing raw materials through to full product manufacturing
• Oversaw identification of raw materials, hazardous clarification codes, and sampling for standards and microbiology testing
• Member of the SHE Committee since 2013, holding SHE and Spillage Control certifications
• Active member of the 5S GMP Champion Committee; recognised monthly as runner-up for problem-solving
• Served as 6S Champion delegate (2021 – 2023) in preparation for ISO audits
• Conducted matrix training and documentation preparation across the plant
• Recognised with the Revlon Global Innovation Award; the only female process operator in the company
• Assisted in training new operators and maintained accurate production records
• Performed daily start-up checks before production to ensure water systems were fully operational and ready for plant use
• Operated and monitored the high-pressure pump, ensuring sufficient pressure for effective water filtration through the system
• Oversaw the performance of RO membranes, ensuring efficient purification and consistent water quality
• Managed the pre-treatment system, including chemical dosing to prepare water for the filtration process
• Monitored control panel systems, tracking key parameters such as feed rate, flow rate, pressure, and temperature across all gauges
• Recorded operational data accurately to support performance monitoring, troubleshooting, and maintenance planning
• Conducted water sampling and pH testing to ensure treated water met required quality standards
• Identified operational issues early and raised maintenance job cards to support timely fault resolution and quality investigations
• Performed routine CIP (Clean-in-Place) processes and ensured filter replacements every 3–6 months to maintain system efficiency and prevent downstream damage
• Maintained a consistent supply of treated water with stable, compliant pH levels for production use

Line Leader - Revlon - Johannesburg, South Africa

(2012-01 - 2015-01)

• Operated and monitored production lines, equipment, and processes to meet production targets and quality standards
• Monitored product quality and performed in-process checks to ensure specifications were met
• Adhered to safety protocols, GMP guidelines, and environmental regulations
• Set up, adjusted, and maintained equipment as required; performed basic troubleshooting and reported issues to maintenance teams
• Maintained accurate records of production data, batch records, and other relevant documentation
• Ensured work areas were kept clean and organised according to Revlon's standards
• Worked effectively with other operators, supervisors, and departments to meet production goals

Machine Operator - Revlon - Johannesburg, South Africa

(2008-01 - 2012-01)

• Set up, operated, and adjusted machinery as needed throughout the production process
• Conducted regular maintenance checks and cleaning of equipment to prevent downtime
• Monitored equipment and production processes to ensure they met quality standards
• Followed all safety protocols and operational procedures, including Good Manufacturing Practices (GMP) and Standard Work Guidelines
• Maintained accurate records of production quantities, times, equipment status, and issues encountered
• Identified and reported malfunctions or abnormalities in the production process

National Certificate - Chemical Operations - CHIETA (2020-03)

Certificate of Competence - Business Management - Centurion Academy (2015-01)