Sheng Jaw Lee

PLC Software Engineer to manage CCCS (Central Chiller Control System) of BA (Building Automation) technology for data centers. Proficient in developing and debugging PLC programs using Siemens Portal, performing logic verification and troubleshooting. Skilled in using CET’s proprietary PecStar software for system drawing and data/tag mapping, as well as designing and customizing SCADA and EPMS (Electrical Power Management System) webpages via DCIM (Data Centre Infrastructure Management) to optimize client monitoring and control. Involved in system testing, fault analysis, and cross-team coordination to ensure stable and timely project delivery.

- Developed and troubleshooted PLC programs for automated machines. - Implemented motion sequences, interlocks, alarms, and safety logic. - Performed system commissioning, IO checking, and start-up support. - Integrated HMI/SCADA tags and developed monitoring interfaces. - Worked with multidisciplinary teams to ensure machine stability and readiness.

Industrial Trainee at CLLS Engineering (M) Sdn. Bhd., where responsibilities included detailed genset wiring, testing, and performance assessment to meet both internal and customer standards. Key tasks involved following precise wiring diagrams, selecting appropriate wire sizes, colors, and labeling based on CLLS standards, and ensuring all components were connected accurately. Conducted comprehensive Factory Internal Testing (FIT) and Factory Acceptance Testing (FAT) to verify genset functionality, reliability, and safety. Testing processes included function tests for safety protocols, load tests with incremental load levels to evaluate durability, and cold start tests to assess critical performance under rapid load increases. Collaborated closely with technicians and engineers, contributing to project completion and quality assurance for CLLS clients.

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