John F. Carr

                   181 Lexington St., Apt. 19
                   Newton, MA 02466-1337
                   (617) 630-5264
                   jfc@mit.edu



SUMMARY

    Software engineer with over 15 years experience in networking
    and systems-level programming, mostly on UNIX.


EXPERIENCE

NextHop Technologies / Legra Systems                     Acton, MA

    2003-2007

    Principal Software Engineer.
    Designed and implemented software for a variety of features
    of a wireless ethernet (802.11) product including access
    points and a centralized control and management system.
    Used C++ on Linux and C on VxWorks.  Implemented 802.11
    management protocol and 802.1x and WPA authentication.
    (NextHop acquired the software intellectual property of
    Legra in 2004.)

Sightpath / Cisco                                        Waltham, MA

    1999-2002

    Software Engineer.  Worked on many parts of a content delivery
    network (CDN), including design and implementation of DNS-based
    web server selection.  Used Java and C++.  Co-author of "The
    Measured Performance of Content Distribution Networks", Proceedings
    of the 5th International Web Caching and Content Delivery Workshop.
    Co-inventor with Barbara Liskov of US patent 6,925,504, "Methods
    and apparatus for obtaining content from a content-originating
    device within a computerized network".   (Cisco bought SightPath
    in May, 2000.)

Compaq                                                    Nashua, NH

    1998-1999

    Contractor.  Worked on NFS and cluster filesystems for DEC OSF/1
    (aka Digital UNIX (aka Compaq Tru64 UNIX)), and related daemons
    and RPC library code.


Conley/EMC                                             Cambridge, MA

    1998

    Contractor.  Wrote a RAID device driver for Reliant UNIX and assisted
    with a driver for Digital UNIX.  The driver did failover and load
    sharing among multiple SCSI or fibre channel paths to a large
    storage array.  EMC bought Conley in August 1998.

Rational Software                                      Lexington, MA

    1997-1998

    Contractor.  Worked on ClearCase for IRIX, SINIX, AIX, SunOS 4,
    Unixware, and MP-RAS.  Porting, optimization, and bug fixes,
    including the kernel filesystem, support libraries, and some
    GUI debugging.

Polaroid Medical Imaging Systems                          Newton, MA

    1995-1997

    Contractor.  Designed, implemented, and tested network printing
    software for Polaroid's medical printers.  Wrote a device driver
    and image processing code for a PCI card used in the printer.
    Worked on realtime system control code.  Programmed using C++,
    C, and Scheme on SPARCstations and PCs running Solaris; and in
    assembly for Motorola 56000 DSPs.

Digital Equipment Corporation                           Westford, MA

    1992

    Consultant.  Developed software for DEC's VXT 2000 X terminals,
    on Ultrix and VMS systems.  Work included X server internals,
    Ultrix drivers, and secure X software.


MIT Information Systems                                Cambridge, MA

    1989-1991, 1993-1994

    Computer programmer for MIT Project Athena and Information
    Systems.  Systems and applications programming on networked UNIX
    systems.  C and assembly language on several types of hardware
    and several versions of UNIX% (BSD, Ultrix, AIX, SunOS, and
    Solaris).  Ported software written for BSD UNIX to AIX on the
    PS/2 and RS/6000.  GNU C and C++ compiler development and
    support for several types of hardware.


MIT Project Athena                                     Cambridge, MA

    1988-1989

    User consultant.  Helped users of MIT's Athena computer system.


Massachusetts Institute Of Technology                  Cambridge, MA

    1988-1989

    Computer programmer.  Wrote a demonstration program for
    networked, computer aided negotiations using the C programming
    language and the X Window System.

Massachusetts Institute Of Technology                  Cambridge, MA

    1987

    Worked in an astronomy lab.  Designed and built software and
    hardware for interfacing a camera to a UNIX workstation.

IBM                                                      Houston, TX

    1986

    Computer programmer.  Worked on the design of a computerized
    airline reservation system.  Programmed in CSP (a high level
    database oriented language) and assembly language on IBM
    mainframes running VM/CMS.



SKILLS


    Languages: Java, OCaml, C, C++, assembly.

    Kernel and drivers: several UNIX variants; PCI, SCSI, serial,
    network, graphics devices.

    IP Networking: TCP/UDP applications; packet level protocol
    debugging.

    Other: ClearCase, RCS/CVS. adb, dbx, gdb debuggers.  X library
    and server.  GNU C internals.  Multithreading (user and kernel).


EDUCATION

Massachusetts Institute Of Technology                  Cambridge, MA

    1985-1988, 1992

    Department of Earth, Atmospheric, and Planetary Science.