Patricia Liang
Tucson,AZ
Overview
10
10
years of professional experience
Work History
Manufacturing Engineer
RTX
Tucson, AZ
05.2022 - Current
- Achieved HPU reductions and cost savings by re-architecting Manufacturing Data Packages (MDPs), removing redundant operations, and aligning manufacturing plans with lean principles and production best practices.
- Supported New Product Introduction (NPI) transitions, managing integrated Microsoft Project schedules, completing prototype builds, and partnering with design engineering to embed manufacturability considerations early in the design cycle.
- Utilized Creo to design production and inspection aids that improved build repeatability, enhanced measurement reliability, and supported both prototype development and production hardware readiness.
- Demonstrated expertise in adhesive bonding, including surface preparation, bondline control, cure cycles, and oven/autoclave profiles required for production hardware
- Owned nonconforming hardware for assigned programs, conducting root-cause analyses and driving effective corrective and preventive actions to eliminate recurring defects and ensure production stability.
Chemical Process Engineer
Mitsubishi Gas Chemical: Pure Chemicals America
Mesa, AZ
03.2021 - 04.2022
- Implemented process improvements across multiple chemical manufacturing operations, conducting modification risk assessments, hazard analyses, and cost evaluations to understand impacts on safety, quality, and production efficiency.
- Monitored and analyzed process data using PI, SQL, and JMP, ensuring compliance with quality limits, identifying root causes of process excursions, and driving data-backed recommendations for continuous improvement.
- Planned and coordinated chemical production schedules, performing batch calculations to determine precise material requirements and ensure efficient, on-time manufacturing.
- Evaluated, selected, and oversaw contractor services during the startup and implementation of new chemical processes, ensuring adherence to scope, safety standards, and technical requirements.
- Authored comprehensive technical documentation, including experiment reports, process changes, improvement plans, and excursion analyses to maintain traceability and support knowledge transfer.
- Ensured compliance with safety and environmental regulations, by collecting, organizing, and validating all process and emissions data required for annual EHS reporting
Metallurgical Engineer
Barrick Gold Corporation
Elko, NV
11.2018 - 03.2021
- Collaborated cross-functionally with operations, maintenance, ore control, metallurgical/assay labs, and support departments to ensure safe, stable, and efficient plant performance across all processing circuits.
- Delivered daily, weekly, and quarterly production reports, presenting key performance metrics and operational insights during the daily production meeting to support decision-making and shift alignment.
- Compiled, trended, and analyzed process data using PI and Python to diagnose production issues, identify bottlenecks, and prioritize improvement initiatives that enhanced throughput and metallurgical performance.
- Optimized gold recovery and overall production efficiency by adjusting short-term process parameters and leading long-term improvement projects in the crush/grind and leach areas.
- Advanced environmental compliance performance by automating and digitizing air-quality monitoring, reducing site air deviations by more than 50% and improving reporting reliability.
- Designed and executed laboratory and plant-scale metallurgical test programs, generating data to support process optimization, reagent strategies, and equipment upgrades.
Engineering Student Trainee
General Services Administration (Public Building Service)
San Francisco, CA
06.2017 - 08.2017
Quality Assurance Intern
Tarte Cosmetics
Manhattan, NY
09.2015 - 05.2016
Education
Bachelor of Science - Chemical And Biomolecular Engineering
New York University
New York, NY06.2018
Master of Science - Chemical Engineering
Stanford University
Palo Alto, California, CASkills
- Microsoft Office Suite
- Python programming
- Process improvement
- Statistical analysis
- MATLAB proficiency
- Creo
- PI
- Linux
- Minitab
- AutoCAD
Timeline
Manufacturing Engineer
RTX
05.2022 - Current
Chemical Process Engineer
Mitsubishi Gas Chemical: Pure Chemicals America
03.2021 - 04.2022
Metallurgical Engineer
Barrick Gold Corporation
11.2018 - 03.2021
Engineering Student Trainee
General Services Administration (Public Building Service)
06.2017 - 08.2017
Quality Assurance Intern
Tarte Cosmetics
09.2015 - 05.2016
Bachelor of Science - Chemical And Biomolecular Engineering
New York University
Master of Science - Chemical Engineering
Stanford University