SUMMARY

Senior Linux/UNIX engineer with tremendous breadth and depth in all areas of operating systems, drivers, and networking. Comes up to speed quickly on new technical areas, and completes high volume of quality work with little or no direction. High-performance team builder; finds creative ways to progress complex software development efforts with limited resources.

SELECTED ACCOMPLISHMENTS

• Led OS team for Linux-based internet appliance.  Designed, coded, integrated changes to LILO, kernel, drivers, utilities, and build scripts, to deliver complete embedded Linux distribution.  Overcame shifting, ambiguous requirements, enabling on-schedule completion and successful product launch.
• Enhanced UNIX-based ia64 simulator and PA-RISC emulator to support proprietary OS, including instruction set changes, cross-architecture call/return and debug facility, and 500% performance improvement.  Overcame several obstacles, enabling progress with very limited resources.
• As HP-UX OSI networking architect, oversaw kernel port of third party OSI protocol stack, including upper and lower layer interfaces, coexistence with existing TCP/IP and OSI implementations and applications, IPS/OSI migration, and SMP issues.  Devised an optimized buffer management scheme which prevents buffer runouts in low-memory conditions, thus eliminating sporadic system crashes and building credibility with SW supplier/partner.  Resolved various problems, including panics, related to kernel port.
• Solved critical problems by coding or debugging in areas of no prior technical expertise, unblocking software release activities or stopping system crashes at customer sites.
• Conceptualized, designed, implemented innovative scheme for porting software to a new processor, allowing application and its libraries to be ported in parallel rather than serially.  Led team which used this scheme to complete a 390,000-line port a full year ahead of schedule.
• Investigated, designed, implemented improvements to boost filesystem performance of BSD LFS in directories with large numbers of files; postmark showed over 25% improvement on 150,000-file test.
• Devised scheme to expand address space of "32-bit" HP-UX processes, using undocumented features of HP-UX operating system, for large contract requiring >4GB addressable shared memory.

CHRONOLOGICAL SUMMARY

• Hewlett-Packard Company

  July 1976 - July 2002

  Embedded Software Operation (Palo Alto):  Software Architect

  February 2001 - July 2002

  Digital Entertainment Center program: system startup, kernel, drivers, graphics subsystem
  
  

  Commercial Systems Division (Cupertino):  Software Architect

  May 1999 - January 2001

  MPE/ia64 program: PA-RISC emulator for MPE/ia64; language roadmap; runtime architecture
  
  

  HP Japan (Kobe and Osaka):  Lead Engineer

  April 1995 - March 1999

  Development environment for joint (HP/NEC) kernel development;
  Sumitomo Life project: win32 application development;
  Divisonal task force: surveyed markets and technologies.
  
  

  HP Japan (Tokyo).  Project Lead

  July 1993 - March 1995

  Liaison and internal consultant for NTT-SMS development team
  
  

  HP-UX Networking R&D labs (Cupertino):  Engineer/Scientist

  August 1985 - June 1993

  OSI architect; OSI committees and OSF; OSI marketing liaison; Netware/PA-RISC
  
  

  HP3000 Networking R&D labs (Cupertino):  Development Engineer

  June 1982 - June 1985

  LAN card driver, firmware; networking subsystem
  
  

  HP3000 Networking R&D labs:  Project Manager

  August 1981 - June 1982

  LAN project
  
  

  HP300 R&D labs:  Development Engineer

  July 1976 - August 1981

  Terminal control hardware; HP300 CPU firmware; utility software

EDUCATION

• Master of Science, Stanford University, Electrical Engineering
• Bachelor of Science, Stanford University, Mathematics

• US Patent 6,901,583
  Method for testing of a software emulator while executing the software emulator on a target machine architecture
• US Patent 7,725,436
  Method and system for reducing the number of read-only, persistent point-in-time images on a storage server
• US Patent 7,472,242 (co-inventor)
  Eliminating duplicate blocks during backup writes