PROFESSIONAL SUMMARY:

Extensive experience in embedded systems programming, data storage, data communication, data acquisition, process control and monitoring with structural and OO design. I am team player who can adapt to different types of work and environment in full product lifecycle.

TECHNICAL EXPERTISE:

Programming Languages: C/C++, ASM, Python, Expect, PHP, HTML, JavaScript

RTOS: VxWorks, OSE, Nucleus, Linux

Target architecture: SoC ( OMAP, Qualcomm MSM/CSM), CPU (ARM, PowerPC, ColdFire)

Development platform: UNIX (Solaris), Linux, Windows

IDE: Code Composer/MS Visual/Atmel Studio, Tornado, TRACE32, Xtensa Xplorer, Virtio, MySQL

Lab Tools: Logic/VME/USB/PCIe AnalyzerFrontline Sniffer

Methodologies: Structural Design, OOD/OOA

PROFESSIONAL EXPERIENCE:

Confidential, Menlo Park, CA

Firmware Development Engineer

Responsibilities:

• PBL (Pointing By Light), LED and servo - mechanism laser beam pointers (C, PSoC Creator).
• Enterprise Architecture document design.

Confidential, Fremont, CA

Sr. Firmware Development Engineer

Responsibilities:

• Xtensa Xplorer, host side (CentOS 5.11)
• OCD, utilities and administration application target side (CentOS 6.5, Windows7)
• SSD drive board bring-up (PMC PCIe/NVMe controller)
• Meta partition utilities design (FW and Super Block images read/write)
• Debugging stubs design (Flash Channel, target, LUN, block, page access)
• Secondary boot loader commands design (FW and Super Block read/write).
• Flash interface initialization design ( SLC/MLC, Toggle DDR 2.0)
• SMBus interface set up and application code design (PCIe, NVMe, CAR bus access).
• PCIe/NVMe Windows/Linux driver design (C, Visual Studio, WinDbg, Eclipse, GDB)
• Power management and feature set/get support
• I/O and IOCTL request support
• UEFI Windows development environment set up (Visual Studio, EDK ||, C)
• Firmware development constraints solution.
• Overlay design improvement
• Priority based wear leveling algorithm improvement Test software design (Python and C)

Confidential, Woodinville, WA

Firmware Engineer

Responsibilities:

• Power management software design (Atmel controllers AVR32UC, ARMSAM4S)
• Confidential pins and interrupts programming
• Bluetooth/USB transport testing
• Code modularization and testing

Confidential, Folsom, CA

Software Engineer

Responsibilities:

• Flash file system operation transaction safe PLR feature implementation
• Power loss data formalizing using log file mechanism
• File system recovery reversing interrupted operations
• Disk check and error corrections
• Hash table search algorithm
• CRC32 based hash table design (API, callbacks, internals)
• SCFS API modification to conform hash table search algorithm
• SCFS kernel modifications to conform hash table population and callback parameters
• NFTL debugging (Wear Leveling, Garbage Collection, Bad Block Management)
• Performance and memory usage analysis; porting to Nucleus OS
• Test points requirements design and PCIe analyzer setup (LeCroy)
• Board bring-up, performance testing and data processing
• Reliability software architecting and design
• Linux PCIe/NVMe driver modification
• Set of PCM die test mode access utilities
• IO Performance software design (C, Windows, Linux, MySQL, Vdbench, Fio)
• MySQL client application software design
• Data modeling and database schema design
• Benchmark tool run, data generation and database tables population
• Database driven website design (Apache, PHP, HTML, JS)
• Server side database data transfer (AJAX/JSON)
• Client side data processing and charting (jQuery, Highcharts)
• IO Performance code formalization and integration
• Data modeling (IO and database)
• Linux multi-threaded event driven native asynchronous IO test design

Confidential, Petaluma, CA

Sr. Software Engineer

Responsibilities:

• Code building system modification to conform OSE 5.2
• GCC 3.4.4 compiler collection build and testing
• BDI3000/GDB ICE tool setup
• PPC405GP memory management programming
• BSP PPC405GP hardware abstraction layer design to conform OSE 5.2
• OSE 5.2 kernel initialization configurations

Confidential, Dallas, TX

Software/Firmware developer

Responsibilities:

• Confidential serial communication design (retrieve all available COM ports/baud rates)
• Cryptography software design using OpenSSL toolkit
• Message digest, asymmetric keys and signature generation (SHA, RSA)
• High security application signing and image formatting
• NOR, NAND, OneNAND flash drivers design
• Mobile DDR SDRAM configuration
• U-boot loader building (internal/external versions)
• LCD driver design (OMAP2430, Himax HX8312-A)
• USB OTG driver design (OMAP2320)
• Board bring up testing and debugging
• Serial command communication to U-boot Linux loader (Expect)
• Linux kernel (Monta Vista) OMAP image build and download (Ethernet, TFTP)
• Loading test application and run.

Confidential, Richardson, TX

Software/Firmware developer

Responsibilities:

• Confidential (Firmware Over The Air) software design.
• Cellular mobile station firmware update download
• Cellular mobile station OMA DM protocols

Confidential

Software/Firmware developer

Responsibilities:

• Gateway system software development and design (MCF5282)
• Boot program, memory management and peripheral initialization
• Kernel initialization, task switching and scheduling
• Data link layer design (Serial Communication, Ethernet)
• TCP/IP stack design
• Protocols design (IP, TCP, UDP, ARP/RARP, PHY)
• Sockets design

Confidential

Firmware Engineer

Responsibilities:

• VISA single/multithreaded protocol state machine design
• Transactions processing (TCP/IP, PPP)
• Micronode VISA protocol state machine simulation on the PC

Confidential

Firmware Engineer

Responsibilities:

• BSP design (h/w initialization, bootstrap)
• Confidential driver design (SCC1, I/O)
• MODBUS protocol implementation
• Confidential Flash device driver design (AMD)

Confidential, Boston, MA

Sr. Software Engineer

Responsibilities:

• Server controller multi-shell parser debugging and update
• CLI debugging and modification ( commands)
• RPC processes debugging ( Ethernet client/server requests)
• Debugging server-module UDP/IP socket communication (VxWorks UDP primitives)
• Line module Confidential debugging and modification:
• Performance monitoring software enhancement as per GR-253
• Cooling module control MPC860 I2C driver debugging and modification

Confidential

Software Design Engineer

Responsibilities:

• Bootstrap program design (MPC860, i960)
• VxWorks BSP modification and customization
• Qualcomm CSM, Xilinx FPGA formatter driver design (I/O BSP level)
• DMA channel programming (DRAM refresh)
• Synchronous serial communication MPC860 HDLC driver design
• Flash memory device driver and loader design
• UNIX utilities design for conversion of the binary FPGA initialization file to ‘c’ file format
• Script and make files design using cshell script language and software integration
• UML CEM subsystem design
• Documentation design accordingly to ISO 9001 standard

Confidential

Software Design Engineer

Responsibilities:

• DSP device driver design based on SHARP LH9124 processor (VME bus, VxWorks I/O)
• Board configuration and filter coefficients loading
• DSP board diagnostic software design, (SHARP LH9124, FIR, FFT)
• Beam forming, inverse beam forming, interpolation and filter coefficient generation
• Graphical presentation of FFT (X Motif)

Confidential

Software Design Engineer

Responsibilities:

• DS0A, DS0B, T1/E1 protocols encoding/decoding and protocol parser FSM design.
• VxWorks inter-task communication and synchronization; interrupt, semaphore and queuing primitives.
• System component description and programming (CDL language)