With 35-plus years plus experience in
computing, I have developed many successful, high-quality, low-maintenance,
easy-to-use hardware and software products.
Have architected, designed, developed, debugged, tested, and documented
six award-winning software products, and two hardware/firmware products. Many of these are presently in productive use
worldwide -- some have been running “bug-free” for over 20 years.
Have personally developed three proprietary operating systems, two real-time
storage array and virtualization systems, disaster recovery and business
continuation applications, financial applications, database applications,
application and systems development and debugging tools, and graphical display
Have specified, purchased, managed,
configured, installed, and maintained servers and array/SAN/NFS/CIFS storage
from multiple vendors.
Have written well over half a million
lines of debugged production code, and several thousand pages of technical
documentation. Have 12 sole-inventor
“crown jewel” issued U.S. Patents.
Product Development Experience
Operating System Development
Architected and developed a
platform-independent real-time operating system, supporting n-way
multiprocessing and multitasking, scheduling and dispatching, memory allocation
and management, device virtualization, rudimentary file system, system initialization
and shutdown, device discovery, security, encryption, resource locking,
semaphores, system debugging and console command processing.
Developed an entire multi-homed TCP/IP
stack from scratch. Developed servers
for Telnet, FTP, HTTP, SNMP, and multiple vendor-specific protocols.
Architected and developed a
complete fault-tolerant, multipathing I/O subsystem.
Developed device drivers for initiator and
target mode NVMe, UFS, SCSI and Fibre Channel, iSCSI, FCoE, ATA, SATA and SAS,
serial and parallel ports, disk, tape, CD/DVD, USB, flash memory, EEPROM,
NVSRAM, UPS, timer, real-time clock, keyboard, USB, Ethernet/Gigabit, and
simple graphics. Developed extensive software
for device exercising and testing, bring-up, compliance, data-integrity-verification,
fault-isolation, diagnostics, and performance analysis and reporting.
Ported open source filesystems and
scripting languages to this proprietary RTOS.
Storage and Storage Array Subsystem Development and
Architected and developed an interface-agnostic,
SCSI-compatible storage product with support for disks, tapes and CD/DVD, device
simulation, caching, device virtualization, zoning, transparent local and
remote device access, n-way local, remote, and cascaded mirroring and snapshot,
no single point of failure, n+1 failover/fallback, multiple active coherent
cache, data error detection and recovery, customizable performance and tuning, configuration,
extensive reporting, and support for user, operator, administrator, and
maintenance console commands.
Ported drivers and kernel functions to Linux, FreeBSD,
Developed SATA and iSCSI drivers for LSI Logic storage
arrays. Took over development,
debugging, and documentation for defunct storage array supplier.
Developed SCSI/NVM/SOE layer firmware for
PMC-Sierra FLASH chips.
Developed NVMe drivers and
Developed UFS drivers and test/performance/bring-up tools.
Designed, managed, and/or developed six
successful products for the IBM mainframe environment including: XMENU, a multiple-award winning
windowing tool for mainframe terminals (pioneered what-you-see-is-what-you-get
screen layout editing, and symbolic-field-naming), KPROBE, a post-mortem operating system debugging tool, XDEBUG, an interactive application and
system debugging tool, SQLEXEC and SQLMENU – interactive SQL development
tools, and KDES, a file encryption
tool. Also developed program product
distribution and maintenance tools.
Co-developed a pharmaceutical tracking system using radio frequency
identification (RFID) technology, web programming, and SQL databases. Developed a financial application for
testing, simulating, and validating equities trading and portfolio
management. Developed tools for product
development, test, and installation.
Website/Social Media Development
Created and maintain websites for several
not-for-profit organizations. Created
and maintain several blogs. Instrumented
websites to monitor usage statistics.
Developed several online databases.
Personal Computers and Servers
Microsoft Windows-- all variants --
product design and development, modifications, device drivers, installation,
performance and tuning, maintenance, testing, operation, experience with
virtually all popular software products.
Subscribe to MSDN. Maintain
multiple personal XP and Server systems, including SQL, web servers, email
servers, communications servers, and application servers.
Linux -- all variants -- product
design and development, installation, testing, performance and tuning,
operation, device drivers. Maintain
multiple personal Redhat and SuSE Linux systems.
UNIX/BSD -- product design and
development, installation, performance and tuning, operation, administration. Maintain multiple personal FreeBSD, NetBSD,
OpenBSD, and Solaris systems.
NetApp – all filers and shelves, LSI/Engenio
-- all arrays, EMC – all arrays.
Installation, configuration, migration, management, backup, snapshot, DR/BC,
dedup, security performance, utilities.
JBOD. FC, SAS, iSCSI, FCoE, SATA, ATA drives.
Mainframes and Enterprise
VM -- all variants -- product
design and development, modifications, installation, performance and tuning,
testing, operation, experience with virtually all program products
MVS -- all variants -- product
design and development, installation, testing, performance and tuning, operation,
experience with most popular program products
SQL databases -- product design and
development, installation, performance tuning, operation, administration
Storage management -- product
design and development, performance tuning, operation, administration
MIS management -- hardware and software
procurement, installation, operation management, maintenance, physical
planning, and disaster recovery – managed multiple enterprise computer centers.
Intel x86 -- product design and development,
hardware and software acquisition and installation, performance and tuning,
BIOS development, own Pentium development and test systems, with personal
copies of over fifty software development, application, and tool products,
Windows SDK and DDK, Windows XP/Vista
SDK, DDK, and HAL..
Power PC -- NT, AIX --
firmware/diagnostics/system bring up.
Windows NT SDK, DDK, and HAL Novell NetWare, Windows, Linux, BSD,
Solaris -- network setup and administration
Experience with UNIX systems dating back
to first UNIX version shipped outside Bell Labs to AUX/Solaris/UTS/Linux
MIPS, ARM, XScale, PowerPC, Cavium,
licensed embedded processor programming
C, C++, Microsoft Visual C++, Intel, Gnu
-- product design and development
REXX -- product design and development
Turbo Pascal and Pascal/VS
Minor experience with many other languages
Many assembler languages
Many microcoding languages – developed
proprietary microcode compiler
Several prototyping/object oriented
languages (Actor, Smalltalk V)
Most scripting languages (Python, Perl,
various shells, etc.).
Documentation, Web Design, Multimedia, Image, and Graphics
Microsoft Word and PowerPoint, Word
Perfect, Adobe Acrobat, FrameMaker, and PageMaker, XMLmind / DOCX
Adobe Photoshop, Illustrator, and
Premiere, Corel Graphics Suite, Microsoft Visio
IBM DCF, GML, BookMaster including macro
Hardware, Device Drivers, Vendors, and Standards
Parallel SCSI (LSI, Adaptec,
Advansys), Fibre Channel/ FCoE (QLogic, Emulex, LSI), iSCSI (QLogic, Intel,
others), SAS/SOE/NVM (LSI, PMC), PCI, PCI-x, PCI Express, Infiniband,
IDE/ATA/SATA, AHCI (Intel, Marvell, Promise, Broadcom), Ethernet/GigE/10/40/56/100GigE
(Intel, Broadcom, Mellanox), ISA/EISA, USB (UHCI, EHCI, xHCI), I2C, BIOS, ACPI.
NVMe, UFS, ATA/SATA, SCSI, FC, SAS
drives (Seagate, Maxtor, Western Digital, Hitachi, others), various CD/DVD and
Extensive IBM mainframe experience
-- diagnostic development, test cases, advanced function design and
specification, ESCON, channel programming including virtually all peripherals
x86, Power PC, XScale, MIPS, ARM --
systems architecture (embedded Linux, RedBoot, OpenBoot, grub) – various
chipsets (Intel, Broadcom, Marvell, Cavium, TI)
Spreadsheet -- Excel
General Accounting – Peachtree,
Project and Development Management
-- Microsoft Project, Track, Delta, SourceSafe, Subversion, CVS, Perforce,
Proprietary bug / problem tracking
systems, test driver and tracking systems
Contact tracking software, communications
Large complement of development and