Experience
2020 — Now
2020 — Now
San Francisco, California, United States
* Led effort to refactor and re-design code to support extensive unit-testing
* Ask me about the 3 inter-related ethernet DMA bugfixes that took 2 months to debug. Fun story.
* Designed safety-case and JAMA requirements to prove reliability of embedded device; later used as template for other devices to follow.
* Bringup human-interface board: Extremely redundantly engineered device to blink LED's and play sounds to inform driver of autonomy state. Designed communication protocol for safety-critical communication.
* Integrate 3rd party cryptography chip for secure boot: had to reverse-engineer and bugfix the entire stack due to "suboptimal" vendor support
* Create deployment tooling and infrastructure for secure boot device, along with a reliable over-the-air update scheme.
* Bringup new GNSS board: all peripherals, GNSS protocol support and conversion, bootloaders, integration with existing testing infrastructure.
* Implement various microcontroller drivers: USART, timer peripherals, i2c, ethernet, etc.
* Implement FlexCAN support on embedded device testing infrastructure
2018 — 2020
2018 — 2020
San Francisco Bay Area
• Wrote Buildroot packages for GPS protocol converters and adapters
• Upgraded bootloader firmware versioning for consistent tracking within testing infrastructure
• New board bringup of next-generation product using Yocto buildchain
• Architected new internal runtime system for message passing, signal Input/Output, modular services, etc.
• Designed failure resistant testing, logging, and demo platform per specific customer requirements
2017 — 2017
Berkeley, CA
• Implemented Linux kernel bootloader upgrade failsafes to guarantee never bricking the device
• Upgraded bash scripts to streamline development and deployment
• Designed system for encrypting flash storage, but still allowing bootloader upgrades
• Configured GPS chip register settings to gracefully failover from intermittent GPS signal
2016 — 2016
San Francisco Bay Area
• Implemented Bluetooth Beaconing functionality in an embedded environment
• Extended inhouse SQL-based database to accomodate new raw data, and extended Scala back-end to process
• Created new web portals in Ruby to configure Bluetooth settings
2015 — 2015
2015 — 2015
Bryan/College Station, Texas Area
• Modified 3D printer controller firmware to incorporate sensor feedback for faster print times and higher accuracy
• Utilized motor encoders and computer vision to track print nozzle position and correct deviations in printing
Education
University of California, Berkeley