Austin, Texas Metropolitan Area
Skills - Assembly programming, Embedded C, System boot-up process, Embedded Systems development tools, Instruction set architecture, LabVIEW, C, Microchip PIC Processors (18F Series), Digital Signal Processors (DSPs), MATLAB, USB, RS-232, SPI, I2C, NI-DAQ, Perl, Python, Jenkins, Gerrit, SVN. Experience - Fixed-point DSP algorithms in assembly, design of instruction set architecture, and firmware development tools for IP DSP core, design of highly efficient and versatile system boot-up applications, low level embedded firmware/applications in C, maintenance and delivery of code releases, 12+ years of experience in both individual contributor and team leadership roles.
CoreOS
• Lead DSP Systems Engineer – System integration and porting of complex fixed-point DSP algorithms. - Responsible for firmware releases, and creating and maintaining Jenkins Continuous Integration (CI) builds. - Coordinated efforts of local and 3rd party teams to efficiently port DSP algorithms to Qualcomm Hexagon DSP. Collaborated with cross-functional teams. - Optimized algorithms to achieve tight MIPS and memory budget. • DSP IP Core Firmware and Tools Technical Lead – Firmware development tools, system boot-up process and Instruction Set Architecture for Cirrus Logic’s LED lighting product line. - Designed and implemented IP firmware development tools including assembler, linker and store-builder applications. - Designed a flexible system Bootup mechanism including BootROM and Bootloader IP applications in ROM. - Designed Instruction Set Architecture (ISA) of processor’s normal and reduced instruction set modes. - Designed, implemented and tested several ROM routines including Data RAM BIST routine. - Worked on conceptualizing interaction and division of firmware between ROM and OTP memories. - Worked with RTL design engineers to verify ASIC functionality and interoperability of firmware on the embedded processor. • Power Measurement Systems DSP Firmware Lead - DSP algorithm design, simulation and implementation for Cirrus Logic's Power Meter product line. - Algorithms aimed at high accuracy energy and power measurement calculations and other system related functionality using fixed point implementation in assembly language. - Algorithm implementation for fundamental calculations for measuring Total Harmonic Distortion (THD) on voltage/current channels with an error of 2%. This work led to a US Patent #9,759,751.
- Designed and developed firmware for Tolteq’s GUIDE Surface System™’s electronics including Surface System Interface (SSI) cable – PIC18F4620 and PIC18F67J50 processors. Work involved USB, RS-232 and SPI communications. GUIDE Surface System provides live surface data including temperature, battery voltage, current consumption, shock and vibration, and flow. - Implemented 900 MHz radio communication with PIC18F67J50 processor – wireless data transfer at 3.2Mbps using Microhard n920T spread spectrum radio. - Developed firmware for the monitoring processor (PIC18F6722) in a system that is functionally equivalent to a string of MWD (Measurement While Drilling) tools. The system provides real-time downhole data during directional drilling. - Designed and developed MWD Tool Tracker™ application that interfaces with Tolteq’s complete suite of SMART® downhole electronics. Work included detailed processing of data and TX/RX with embedded tools using LabVIEW. Tool Tracker™ is designed to access and analyze logged tool history and environmental data to drastically improve Mean Time Between Failures of downhole MWD tools.