John Hemmick Email & Phone Number

Norway

Austin, Tx, Us

Austin, Tx, Us

• Provide direct engineering support to customers concerning Secure Element• Execute Product Security Incident Response (PSIRT) and coordinate critical vulnerability fixes• Present product security updates to BU stakeholders• Produce embedded security training and documentation materials• Develop and lead product security coursework

• Designed secure firmware for a cryptocurrency wallet based on NXP's Kinetis 82• Architected Secure Enclave transaction driver, touchscreen, flash/filesystem and GUI components• Designed and implemented firmware API for encoding cryptocurrency transactions

Austin, Tx, Us

• Architecting a Linux-based IPv6 IoT network routing appliance• Producing embedded firmware for reference designs to aid customers bringing new IoT products to market• Developing new APIs and host applications to simplify and universalize IoT• Optimizing build, test, and deployment technologies

• Working on drivers and firmware development for an 802.11ad SOC intended for low-power, mobile application• Designing and guiding the production of drivers and API for integrating the SOC into Android• Implementing firmware to follow the IEEE 802.11ad wireless specification• Design and implementation of a Hardware Interface Layer to facilitate ease of firmware bringup between chip revisions• Design and implementation of a Hardware Abstraction Layer to facilitate easy firmware transition between chip revisions• Debugging linux driver, wpa supplicant, and proprietary embedded firmware• Implement new linux code for drivers and utilities (iw, wpa supplicant, nl80211) that interact with proprietary SoC

Houston, Texas, Us

Designed and implemented new firmware features in C/C++ for a next-generation blade management processor; Assisted team supporting current-generation lifecycle by fixing defects and implementing customer feature requests• Assisted bring-up and boot into Linux for prototype board, personally responsible for enabling flash read/write utilities for ECC-protected NAND flash part• Implemented firmware application and API to load and store system configuration files to NAND flash part• Produced documentation for NAND flash storage utility and API for future use in the development lifecycle• Ported previous-generation firmware to new platform, resolving hardware and compiled differences by designing a Hardware Abstraction Layer and API in C/C++• Conducted feasibility study on Controller Area Network (CAN) as an IO/serial expander bus• Improved firmware flash upgrade process to utilize multiple threads and to stream firmware images from the network• Designed method to checksum firmware stream on-the-fly, storing only new firmware updates for currently-present components to main memory before writing to flash

Houston, Tx, Us

• Designed low-noise, high-gain instrumentation amplifier and electronic stethoscope device for web-enabled telemedicine kiosk• Created User Datagram Protocol (UDP) streaming backend for sending realtime stethoscope audio to doctors over the internet

Houston, Texas, Us

Worked on team designing a high-resolution oil prospecting sensor and controls for field technicians• Identified priority scheduling improvements and processor optimizations in C/MATLAB to prevent real-time data collection thread from being starved by Matlab analysis process• Modified technician software to improve thread priorities, and added a graphical resource monitor in C# to technician terminal program

Houston, Tx, Us

Worked at the English department’s tutoring center providing writing consultations for peers andinstructing a remedial technical communications course• Improved the writing ability of incoming-freshman with focus on clear, concise technical documents• Advised peers from the engineering school on their technical writing and documentation