- Manage production test development and maintenance, characterization, qualification (Eg: uHAST/bHAST/HBM/CDM/etc), and reliability (Eg: HTOL/ELFR/etc based on JESD47/AEC-Q100) related activities- Data analysis on wafer test and final test result for appropriate disposition on outlier lots on STDF file with QuickEdit and python script/tool- Oversee all production related activities such as wafer test, final test, probe card design, load board design and package assembly build from NPI to EOL (mainly on Teradyne J750)- Cooperate with subcons/OSATs for throughput, production, and qualification activities- Collaborate with subcons/OSATs to improve quality, test time reduction and flow optimization activities- Automate test process by writing software scripts (mainly with Perl/Python/SQL) to improve work efficiency and yield analysis- Develop and maintain test programs to cater to customers' specifications, device performance characterization needs and analysis of customer returns- Optimize test programs by applying efficient testing methods to improve yield, reduce production test times and manufacturing cost in both wafer test and package test.- Manage package and product qualification flows to ensure the product meets customers’ spec- Manage the product’s overall test cost and improve over time for cost reductionKey accomplishments:- Created a Power BI dashboard for production volume and yield to provide infographic view insights for weekly meeting.- Collaborate with capacity and quality team on yield, test time and quality monitor metric. - Collaborate with vendors, subcons/OSATs on product, hardware, and test program. - Enable and develop test program to meet customer request for new market.- Improve products' quality by analysing RMA and implement effective screen with minimal to no impact on test time and cost. - Qualified product on new subcon/OSAT with close collaboration.- Achieved 50% TTR for cost reduction without sacrificing the quality.

- Develop and maintain test program on latest technology node NAND devices from NPI to HVM with tight timeline for design win- Perform DOE and FMEA to improve process and defect analysis.- Ensure proper data analysis with JMP/LINUX/in-house tools and disposition on SPC outlier lot to maintain excellent quality with target of zero excursion or quality event. - Automate test process by writing software scripts (Python/PERL/BASH) to improve work efficiency and yield analysis- Cooperate with product/equipment engineering departments to improve overall yield to maximize ROI.- Collaborate with test capacity and manufacturing departments to realize output goals- Develop and monitor process and engineering metrics to ensure stability, efficiency, and effectiveness of test processes- Optimize test programs by applying efficient testing methods to reduce test times and manufacturing cost in both burn-in and ATE testing (mainly on Advantest T5375/T5585).- Reduce cost by catching error early in production test program as an SME on peer/code review Key accomplishments:- Created a Tableau dashboard to analyse production volume, machine, and test board down time. - Collaborate with product, capacity, and quality team on yield, test time and quality monitor metric. - Collaborate with different business units and team from Shang Hai and US on product and test program. - Qualified new assembly site and test platform for cost saving and support high volume testing.- Implement multiple screens and resolution on fabrication and assembly excursion materials to guarantee product's quality.- Enable and develop NPI test program to meet customer request for new market.- Improve products' quality by analysing RMA and implement effective screen with minimal to no impact on test time and cost. - Manage to implement reasonable test time reduction on multiple tech nodes with zero excursion for multiple years with proper DOE execution. - Publish four technical papers in Micron.

- Designed, implementation and support of any engineering deliverables.- Maintained existing application and added new functionality based on functional specification documentations.- Maintained department’s computers, servers, wrote .bat files and consoled utilities to automate maintenance tasks.- Involved in requirements gathering and analysis, development, testing, implementation, maintenance, conducts end user training, documentations preparation in all projects.- Involved in improving existing application and system become more efficiency and reduce time. - Developed extensive data logging and analysis tools including an interface to Microsoft Excel for displaying detailed charts and graphs.- Improved test process by reducing analysis time for low data line detection rate by 75% which is 3 hours to 45 minutes (MI project similar to 6 sigma which is implemented in Toshiba)- Extensive coding experience in VB6, VBA (Excel Macro), PERL and JavaScript.