Liang Sia Lee

Senior Engineer

Singapore

About

Experience

  • Senior Engineer at National Environment Agency
    Jul 2025 - Present · 1 yr

  • Process Engineer at SUMITOMO CHEMICAL ASIA PTE LTD
    Aug 2021 - Jul 2025 · 4 yrs

    - Provided technical support to MMA (Methyl Methacrylate) Production Plants & Centralized Utilities Plant. - Troubleshoot process and equipment abnormalities with operation and maintenance team. - Improved Plant Unit Consumption through optimization of unit operations and minimizing process losses. - Achieved yearly savings of SGD 1.8M by optimizing utility during prolong plant shutdown, effectively reducing electricity consumption. - Supported operations in plant shutdown works, including reactor catalyst regeneration, equipment inspection, and monitoring of shutdown and startup processes. - Assessed and evaluated the suitability and impact of using alternative sources of raw material to the process. - Collaborated with Japan HQ for catalyst performance and process improvement ideas. - Proposed and executed plant modification works through Management of Change. - Leveraged Yokogawa Centum VP functions for monitoring and maintaining the quality of MMA product. - Oversaw and successfully executed the replacement of catalysts in Reactors, leading a team of 30 workers and achieving completion ahead of schedule. - Reviewed and conducted HAZOP and Risk Assessment procedures, ensuring safe working environment. - Served as an Internal Auditor for ISO9001 and ISO14001 standards.

  • Operation Engineer (Energy from Waste) at Sembcorp Industries Ltd
    Aug 2019 - Jul 2021 · 2 yrs

    - Collaborated with shift teams to attain process excellence and meet regulatory and product requirements. - Monitored process trends and managed chemicals inventory to ensure safe and stable plant operation. - Participated in investigations and root cause analysis for plant incidents. - Managed Management of Change and liaised with vendors and the engineering team for plant improvement projects. - Ensured shift teams are competent by providing guidance and ensuring for Standard Operating Procedures. - Coordinated the execution and commissioning of projects with vendors to ensure safe and timely completion. - Worked with maintenance team to ensure shutdown activities were on track and completed safely.

  • Operations Intern at Infineum
    Aug 2018 - Dec 2018 · 5 mos

    - Provided technical support to Blending Operations by conducting process troubleshooting and optimization through analysis of process trends. - Designed and implemented an Excel Tool for efficiently locating Equipment and Instruments on Piping and Instrumentation Diagrams (P&ID). - Played a key role in the implementation of the Operations Integrity Management System, contributing to the update of Equipment Operating Windows for enhanced operational efficiency.

  • Student Researcher at Institute of Chemical and Engineering Sciences
    Jun 2013 - Feb 2014 · 9 mos

    - Collaborated with a team of 3 to achieve substantial overproduction of glycerol in Saccharomyces cerevisiae through metabolic engineering by redirecting metabolic flux away.