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As a Principal APC Engineer, you will lead the identification, design, implementation, and maintenance of advanced process control and optimization applications across Westlake's Performance and Essential Materials (PEM) manufacturing plants, with a focus on a variety of APC platforms, including AspenTech, Rockwell Automation, and Honeywell APC platforms. You will partner with Data Scientists, Plant Operators, Process Engineers, and Digital Office colleagues to deploy and sustain robust APC solutions that deliver measurable improvements in safety, reliability, efficiency, product quality, and sustainability objectives. Your expertise will directly support client's multi-year APC strategy, targeting multi-million-dollar annual benefits and harmonization of control systems across diverse technologies and sites.
Job Responsibility:
Lead the identification, design, implementation, and maintenance of advanced process control and optimization applications across Westlake's Performance and Essential Materials (PEM) manufacturing plants
Partner with Data Scientists, Plant Operators, Process Engineers, and Digital Office colleagues to deploy and sustain robust APC solutions
Responsible for the entire lifecycle of an APC project, including identification, design, implementation, and maintenance of APC Applications for real-time process optimization across PEM manufacturing sites
Analyze process dynamics and operation challenges, and develop advanced control strategies, including multivariable control, advanced PID, sequence control, and interlocks, etc
Proactively monitor, troubleshoot, and tune APC and base layer PID controller performance, ensuring uptime and benefit realization targets are met
Support the implementation and maintenance of the company-wide APC KPI Dashboard system
Re-evaluate and adapt control strategies in response to plant operating condition changes
Integrate APC systems with DCS, PLCs, laboratory information systems, and plant historians (e.g., InfoPlus.21 and OSIsoft PI)
Support plant operations during turnarounds, commissioning, and start-up phases
perform site acceptance testing and commissioning of control systems
Ensure changes follow Westlake's Management of Change (MOC) processes and maintain comprehensive documentation
Provide training and coaching to operators and process engineers on APC system usage and best practices
Facilitate adoption and effective use of APC solutions
report usage and performance against defined KPIs
Organize and/or participate in various activities to develop Westlake's APC program, including providing training and coaching to fellow APC engineers with less experience, sharing lessons learned and best practices in company's APC network, developing & defining companywide standards or guidelines for APC project implementation and maintenance process, etc
Participate in DCS/PLC software and hardware upgrades, alarm rationalization, and technical assurance reviews
Work closely with plant operations and engineering to identify and implement process control improvements
Collaborate with OT/IT and Data Science teams to define and execute real-time data strategies and architectures for process automation and analytics
Contribute to the development of technology roadmaps and capital plans for process-automation, control, and optimization
Support standardization and harmonization of APC practices, specifications, and KPIs across client's global PEM sites
Requirements:
Minimum 10 years of hands-on experience in identifying, designing, implementing, tuning, and sustaining AspenTech APC (DMC3/DMCplus/IQ) applications in refinery, chemical, or petrochemical plants
Bachelor's or Master's degree in Chemical Engineering (or related field)
Proven expertise in multivariable control and process optimization
Strong working knowledge of process flowsheets, P&IDs, and control logic diagrams
Demonstrated ability to lead APC projects from design through commissioning and sustainment
Experience with plant data historians (OSIsoft PI, InfoPlus.21, etc.), PIMS, and integration with OT/IT systems
Excellent troubleshooting, problem-solving, and analytical skills
Effective oral and written communication skills
ability to work collaboratively across diverse teams and locations
Strong planning and organizational skills
able to manage multiple priorities and develop support roadmaps
Must be able to sit, walk, use hands, talk, and hear as required by typical office and plant environments
Lifting up to 25 pounds may be required
Travel up to 50% (domestic and international) to support client PEM manufacturing plants
Nice to have:
Experiences of other APC platforms, such as Honeywell's Profit Suite/Forge APC platform, and Rockwell Automation's Pavilion8 MPC platform will also be beneficial
experience in steady-state and dynamic process modeling is a plus