SENIOR CHEMIST (QC)

Private Advertiser; Kemaman; On-site; MYR 90,000 - 140,000; Full time

Job summary

The Senior QC Chemist role at Private Advertiser is responsible for ensuring scientific correctness, reliability, and continuity of routine Quality Control laboratory operations, including analytical testing, instrument performance, and method integrity supporting day-to-day plant operations.

You will lead method validation, contribute to process troubleshooting and improvement initiatives, and provide training on analytical fundamentals to laboratory staff.

Qualifications

• Bachelor's degree in chemistry or a related scientific discipline.
• Minimum 5 years industrial experience in analytical laboratories.
• Experience supporting QC operations and analytical studies.
• Strong fundamentals in analytical chemistry and instrument signals.
• Experience with inorganic chemical processing instrumentation.

Responsibilities

• Maintain method validity and fitness-for-purpose across QC tests.
• Design and refine sample preparation to reflect matrix.
• Assess interferences, sensitivity, and instrument drift.
• Provide expertise in XRF, XRD, ICP-OES, UV-Vis, and wet analysis.
• Lead investigations for out-of-spec results and process anomalies.
• Train staff on analytical fundamentals and instrument behavior.

Skills

Analytical chemistry

Laboratory instrumentation

Process troubleshooting

Technical communication

Safety awareness

Education

Bachelor's degree in chemistry or related scientific discipline

Tools

XRF

XRD

ICP-OES

UV-Vis spectroscopy

Wet chemical analysis

Job description

The senior QC Chemist is responsible for ensuring the scientific correctness, reliability, and continuity of routine Quality Control laboratory operations, including analytical testing, instrument performance, and method integrity supporting day-to-day plant operations. The role serves as the technical owner of analytical methods and measurement science, ensuring that laboratory results are chemically valid, logically consistent, and fit for decision-making. In addition to routine QC support, the senior QC Chemist provides laboratory-based analytical and experimental expertise to support process troubleshooting and process improvement initiatives, operating within the governance and approval framework defined by the QC Laboratory Manager.

Key responsibilities

Maintain analytical method validity across all QC laboratory test methods and ensure that methods remain fit for purpose in accordance with approved standards and site requirements

Design, verify, and refine sample preparation procedures to ensure accurate representation of the sample matrix and analytical target

Evaluate and manage analytical interferences, matrix effects, sensitivity limitations, method robustness, and abnormal analytical behaviour, including instrument drift, bias, noise, reproducibility issues, and unexpected result patterns

Provide technical expertise in laboratory instrumentation and analytical techniques, including XRF, XRD, ICP, UV-Visible spectroscopy, and wet chemical analysis

Diagnose measurement system issues that cannot be resolved through standard SOP-based actions and establish scientifically sound verification approaches when new or unexpected instrument behaviour is observed

Support the Assistant Chemist in defining appropriate instrument validation strategies, performance verification approaches, and analytical control mechanisms

Design and execute laboratory-scale experiments and analytical studies to support process troubleshooting, process optimization initiatives, raw material evaluation, and product quality improvement activities

Provide scientific interpretation of laboratory results and communicate findings to the QC Manager, Production, and Capex or Operational Excellence teams

Lead analytical investigations related to out-of-specification results, customer complaint support activities, and process anomalies where laboratory measurements are a contributing factor

Support the development of laboratory technical capability by providing guidance and training to laboratory personnel on analytical fundamentals, instrument behaviour, and method understanding

About you

Bachelor's degree in chemistry or a related scientific discipline

Minimum 5 years industrial experience in analytical laboratories, preferably within chemical manufacturing environments involving complex inorganic systems

Experience supporting routine Quality Control operations, analytical troubleshooting, and laboratory-based technical studies

Strong analytical chemistry fundamentals, with clear understanding of how laboratory instruments generate signals, including sample-instrument interaction, matrix effects, analytical interferences, sensitivity, accuracy, precision, and long-term measurement drift

Practical experience with laboratory instrumentation and analytical techniques relevant to inorganic chemical processing, including spectroscopy-based methods (XRF, XRD, ICP-OES, UV-vis) and wet chemical analysis

Competence in analytical method validation, sample preparation design, and interpretation of analytical results with understanding of inorganic chemical processes, including crystallization, precipitation, and solid-liquid system characterization

Capability to design and execute laboratory-scale experiments and analytical studies to support process troubleshooting and improvement initiatives

Ability to translate analytical and experimental data into clear technical insight that can be communicated effectively to Operations, Technical and Management teams

Awareness of chemical hazards, laboratory risks, and safety handling practices associated with inorganic chemicals, laboratory equipment, and analytical operations