Staff Firmware Engineer  •  Western Digital (M) Sdn Bhd

November 2008 - April 2016

Responsible for developing features that will improve quality and production yield for the traditional hard drives, and transferring new technology or products into the factory from the US/Thailand development team.
Perform quality statistical analysis based on the overall hard drive population via Minitab tools. Feedback the statistical analysis to the program manager/failure analysis engineer to perform the next action or change firmware algorithms
Familiar with a hard disk servo control design, which is used to control the actuator moving on the disk to perform read/write operations. It involves multiple modules that allow the actuator reading input signal (i.e., concentric pattern), like PLSI control current injection to allow the actuator movement, channel settings to boost the reading signal from the disk, and so on.
Using C++, Python, Lua, Matlab, Minitab for daily work and familiar with advanced digital microscopes to probe the signal from hard drive electronic boards for failure analysis purposes.

Completed Project -
1. Hard drive Head Stack defect check – Capture head stack preamp sensor temperature cooling effect to determine whether the head crash event happens. Using convolution filters to extract head crash features. With this feature, it will be expected to reduce the potential head reliability issue.