Juli Mallett

Olympia, WA 98502

E-Mail: jmallett@FreeBSD.org

Objective

A leadership role at a small company or startup, building an Engineering team and developing core technology and infrastructure. Especially interested in network infrastructure equipment, operating systems and embedded devices.

Available by contract as a consultant. Offering software development services on a variety of platforms, primarily embedded or kernel-level networking. Information on other consulting services available by request.

Summary

• Interests: Ad-Hoc Networks, Self-Organized Systems, Distributed Systems, Operating Systems, Mobile Networks.
• Languages: C, Objective-C, C++, Haskell, C#, Perl.
• Development Tools: BSD Make, GNU Make, GDB, GNU Autoconf, Subversion, Perforce, CVS, SCCS, GraphViz, Bugzilla, GNATS, LaTeX.
• Operating Systems: FreeBSD, GNU/Linux, NetBSD.
• Development Platforms: POSIX, .Net, Mac OS X (Cocoa).
• CPU Platforms: 64-bit MIPS, i386, x86-64 / amd64.

Experience

• August 2006 - Present, Community Volunteer, Scientific Database Lab at The Evergreen State College

  Olympia, WA

  Providing technical expertise in a variety of areas to Ecology and Eco-informatics research lab as a volunteer.

  • Developed scientific visualizations in C++ with SVG output.
  • Published research on ecoinformatics -- working with species-coded ecological data.
  • Worked with Java-based scientific visualization system. Debugged a number of VTK issues.
  • Developed serial driver (for .Net on embedded Windows) for laser range finger.
  • Managed lab machines, CVS repository, etc.

• May 2008 - December 2008, Independent Contractor, Wasabi

  Olympia, WA (Remote)

  Worked on ground-breaking object storage device based on the SCSI OSD-2 specification.

  • Implemented support for OSD-2 collections in object-oriented file system and SCSI OSD-2 protocol layer.
  • Developed Python SCSI / OSD-2 test framework to craft CDBs for development testing.
  • Designed remote replication system over iSCSI for object-oriented file system.

  Technologies and tools:

  • OSD-2
  • SCSI / iSCSI
  • NetBSD / Wasabi Certified BSD
  • C
  • Python
  • CVS
  • Subversion

• June 2006 - February 2007, Senior Software Engineer, F5

  Seattle, WA

  Developed high-performance performance test framework. Provided technical leadership in software engineering and networking.

  • Worked with test automation team to define and implement an automated test environment suite.
  • Worked on design and implementation of high-performance performance and correctness test framework and developed protocol modules for same.

  Technologies and tools:

  • HTTP
  • TCP
  • Proprietary microkernels
  • C
  • C++
  • Perforce

• October 2005 - May 2006, Member of Technical Staff, VMware

  Palo Alto, CA

  Worked on virtual infrastructure software for mission-critical data center environments as a Software Engineer providing technical leadership in the area of stateless self-organized systems.

  • Ported VMware infrastructure and build environment to FreeBSD, getting most userland components to build and run under FreeBSD.
  • Arranging involvement of VMware within the FreeBSD community, and evangelizing for each side.
  • Led advanced development project for a productionable stateless server product.
  • Handled third-party software integration issues.
  • Maintained various proprietary and open source components.

  Technologies and tools:

  • Perforce
  • C
  • FreeBSD userland
  • Linux userland
  • Linux kernel
  • Proprietary microkernels
  • Virtual infrastructure
  • IPMI

• September 2004 - September 2005, Member of Technical Staff, Riverbed

  San Francisco, CA

  Developed software for WAN Optimization and Acceleration appliance. Part of a small team developing and maintaining software for doing data reduction and managing storage of reduced data for future re-use. Software was also used for data storage (and caches) for protocol specific optimization code.

  • Designed and implemented software to synchronize data storage between appliances in an active/passive and active/active failover configuration.
  • Developed tools for data processing, and disk/network testing tools.
  • Worked on C++ event system and network I/O infrastructure.
  • Developed hierarchical lock order checking infrastructure.
  • Worked on Linux MegaRAID MBOX driver, wrote software module to provide real-time information about array status.
  • Ported algorithms and data structures to operate on 64-bit x86 systems from 32-bit x86 systems.
  • Mentored Engineers in C++ and a proprietary event system.
  • Mentored Engineers in using Multicast UDP to build stateless distributed systems.
  • Designed and implemented a modular system to synchronize data storage between appliances in an expandable cluster.
  • Frequently involved in debugging customer issues.

  Technologies and tools:

  • C++
  • Asynchronous event models
  • TCP
  • Distributed systems
  • Multicast
  • UDP
  • Compression
  • Linux kernel
  • FreeBSD kernel
  • RAID
  • File systems
  • Information indexing/analysis
  • FreeBSD network stack
  • GNU Make
  • CVS

• July 2003 - June 2004, Software Engineer, Firetide (previously Landmark Networks)

  Honolulu, HI

  Designed and implemented wireless mesh software and virtual switching technology for an award-winning wireless system providing local Ethernet switching over WiFi.

  • Performed Release Engineer duties and designed and developed release build infrastructure.
  • Managed CVS repository and FreeBSD codebase.
  • Researched non-uniform mesh network broadcast and multicast algorithms for ad-hoc router networks. Developed a multicast routing stack for FreeBSD for such networks.
  • Designed and developed Layer 2 switching application.
  • Mentored Engineers in FreeBSD, Unix and networking.
  • Developed initial test plan and worked on initial QA cycle for Layer 2 switch product.
  • Developed tools and test plan for performance testing.
  • Provided technical leadership in the areas of networking, operating systems and embedded systems.
  • Provided expert technical knowledge to Sales, Marketing and Customer Service.
  • Performed testing and validation of critical customer issues and provided simple low-risk and thoroughly-documented solutions.
  • Participated in on-site customer site surveys.
  • Designed and developed much of the manufacturing software for CompactFlash programming from release software images, defined software delivery process, developed serial number management solutions. Integrated improved CompactFlash burn process into manufacturing and assembly process.
  • Built solid relationships across teams and worked as part of the whole company as well as part of a team.
  • Provided on-the-fly problem solving and creative solutions to critical company technological issues.
  • Worked with Chief Architect on architectural issues and on defining overall technology strategy and detailed implementation roadmap.

  Technologies and tools:

  • Distributed systems
  • Ethernet
  • Ethernet switching
  • IP
  • IP routing
  • TCP
  • UDP
  • Netgraph (FreeBSD packet processing infrastructure)
  • FreeBSD kernel
  • FreeBSD network stack
  • FreeBSD userland
  • Multicast (IP and Ethernet)
  • TBRPF (mesh routing and discovery protocol)
  • 802.11a and 802.11b
  • RF
  • XML
  • BSD Make
  • GNU Make
  • CVS
  • Perforce

Consulting Experience

Freelance consultant in the areas of Unix systems design and networking implementation. Flexible, can work in different capacities in areas of expertise.

• Analysis and recommendation of third party solutions, especially vs. in-house solutions.
• Acted as technical advisor and provided design and implementation recommendations.
• Implemented, documented and supported software providing semantic network systems, for example, policy-based bridging.
• Mentored Engineering teams and provided technical leadership.

Selected projects:

• Developed a NAT load-balancing solution for a nationwide Wireless ISP, in the FreeBSD kernel. Solution is intended to replace existing per-connection round-robin balancing method, which is harmful to several widespread applications. 2005-2006
• Provided network stack and distributed system knowledge to a startup providing local-area video on demand. 2004
• Designed, implemented and supported a Layer2 subscriber system for a nationwide Wireless ISP, using Netgraph for kernel and userland components in FreeBSD. Software allows restricted content access for non-subscribers and accesses a backend database to allow subscribers full Internet access. 2004
• Modified mail relay software to reduce network and server load for a high-profile market leader in hosted electronic mail and outsourced Spam filtering. 2004

Past roles:

• Technical Advisor for a nationwide Wireless ISP, providing technical leadership and in-depth system knowledge in the areas of operating systems, NAT, bridging, firewalls, routing and multicast. 2004-2006

Community Experience

• February 2002 - Present, Committer, FreeBSD Project

  Committer with direct access to FreeBSD source repository, bug tracking system, etc.

  • Work on POSIX/C99 conformance of userland utilities.
  • Usability changes and feature enhancements for userland utilities.
  • Work on system manual pages (manpages).
  • Work on preventing software exploits, code cleanup, and extensive userland software debugging.
  • Developed a regression test framework and regression tests for userland utilities.
  • Extensive work on BSD Make.
  • Extensive work on the SCCS suite.
  • Implemented POSIX-style real time, informative signals.
  • Developed libufs, a library for working with UFS and UFS2 filesystems from userland. Used by, e.g., newfs and dumpfs.
  • Ground-up 64-bit MIPS3+ port of FreeBSD. Uncommitted.
  • Extensive work with low-level startup, exception handling, interrupts, device driver code, DMA code, machine-specific parts of the FreeBSD kernel, virtual memory, MMU management, etc., on FreeBSD/MIPS.
  • Contributed a new port of FreeBSD/MIPS to Octeon.

  Technologies and tools:

  • BSD Make
  • FreeBSD kernel
  • MIPS
  • C
  • m4
  • Shell scripting
  • Build frameworks
  • FreeBSD userland
  • CVS
  • Perforce

Publications

Papers

• Cushing, Kaplan, Laney, Mallett, Ramsey, Vanderbilt and Zeman. Integrating Ecological Data: Notes from the Grasslands ANPP Data Integration Project Environmental Information Management 2008, Albuquerque, New Mexico.
• Vanderbilt, Cushing, Gao, Kaplan, Kruger, LeRoy, Mallett, Ramsey and Zeman Data integration challenges: an example from the International Long-Term Ecological Research Network Ecological Circuits, Issue 2/2009.

Posters

• Cushing, Mallett, Zeman, Kaplan, Laney, Ramsey and Vanderbilt. Problems and Solutions in Species-Coded Data: Best Practices and Common Issues Environmental Information Management 2008, Albuquerque, New Mexico.
• Cushing, Kaplan, Laney, LeRoy, Mallett, Ramsey, Vanderbilt and Zeman. Cross-Site Analysis of Abiotic Drivers and ANPP at Five Grasslands Sites Environmental Information Management 2008, Albuquerque, New Mexico.
• Kaplan, Vanderbilt, Zeman, Cushing, Laney, Mallett, Ramsey, Gao, Kruger, LeRoy, Milchunas and Muldvavin. A Team Approach to Data Synthesis: The Playbook for Creating a Centralized, Dynamic, and Sustainable ANPP Database Environmental Information Management 2008, Albuquerque, New Mexico.

Other Experience/Skills/Interests

• "Quick learner" and skilled at understanding, digesting, and working with new technologies on the fly, as well as being able to explain them to others. Highly adaptive and capable of working under pressure.
• Strong written and verbal communication skills.

References

References available on request.