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Erlkönig: Résumé

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erlkonig @ talisman.org

C. Alex. North-Keys


ABSTRACT

I have ten years of experience in leading small teams of programmers into progressively more advanced academic projects, as well as acting as the technical lead or one of several senior developers for various commercial projects. I also have a somewhat longer history of problem solving in the realms of Unix systems administration and user support.

TECHNOLOGICAL SKILLS

I have extensive experience in Unix systems administration, heterogeneous network integration, software development, web design, technical writing and course instruction. A partial list of some of the technical skills involved follows, generally with stronger skills first. Detailed information may be found in the http://www.talisman.org/~erlkonig/resume/comprehensivist/ webpage.

Languages:
C (since about 1988), Python [note], C++ (since 1991), PERL, shell scripting, HTML, PHP, Emacs-LISP, GNU make, LISP, and some familiarity with Clojure, Ruby, XHTML, JavaScript/DOM, XML, SQL, Java, (and historical use of the Lucent/Agere FPL router assembly language, VRML, PostScript, Pascal, FORTRAN, Intel x86 assembly (gas/att syntax), Forth, 6502, BASIC )
Systems:
Ubuntu, SuSE, Redhat Linux, IRIX, Solaris, SVr4, Windows, (and historical use of Cisco IOS,, VxWorks, MacOS X, FreeBSD, SunOS, SysV, SCO, Coherent, HPUX, NeXT, DEC, Amiga, Apple, Windows 98/NT/2k, CDC, etc. )
Services:
IPv6, WWW (with CGI, SSI, PHP, SSL), LDAP, SMTP, DNS, YP/ NIS, NFS, FTP, news and NNTP, IRC, SNMP, (X)NTP, POP, IMAP, TFTP, SSH, Samba, RADIUS, VNC, SSL certificate generation (including root CA and hierarchical certificates), and some Kerberos.
Software:
git, chef, Django, Flask, Boto (EC2 management), GNU, X10-X11R7, OpenGL, curses, PostgreSQL, Oracle, Tivoli ( SecMan, GEM, BSM, Framework, Inventory, etc), Big Brother, Intermail (125000 user license), Courier, CommuniGate, Nagios, (and historical use of SGI GL, TeX/LaTeX, FrameMaker, SunView, NeWS, SAINT, and various other source code management systems )

INDEPENDENT PROJECTS

These projects and others are described at http://www.talisman.org/~erlkonig/software/. Some highlights are:

  • Xwins: manipulate and interact with X windows in OpenGL with a 3dconnexion 6-axis controller (I mainly use it to magnify and rotate live X windows)
  • Linux controller software for Alienware AlienFX case lighting
  • Mole, a basic network monitoring system (in PERL, sensible for 2001)
  • A Linux kernel (2.6.35) module implementing a in-kernel text editor controlled via a /dev/editor device (C, proof-of-concept, also perversely ported into PostgreSQL stored procedures)
  • An OpenGL program supporting full interaction with a virtual X server mapped onto polyhedra (OpenGL/C++, in 2003 before Compiz)
  • A virtual X server supporting a framebuffer layout in SGI RGB texture format (X11/C)
  • A method of dynamic polygon complexity adjustment to meet user-settable framerate goals (OpenGL/C++,C)
  • A Linux user-space driver for the SpaceTec Spaceball 4000 FLX
  • An N-tree class based on the STL, supporting customizable allocators, iterators, and STL algorithms (C++)

I run a mixed IPv4/IPv6 heterogeneous network with full internal services under talisman.org.

EDUCATION / CERTIFICATION

  • Texas Education Agency teaching approval for computer systems administration, security, networking, C programming, and Unix at the university level
  • Hurricane Electric / Tunnelbroker IPv6 Certification Sage
  • Beginning Japanese at Austin Community College, GPA 4.0 (mentioned to underscore my interest in i18n)
  • Lucent/Agere: PayloadPlus network processor chipset assembly programming
  • Oracle: Introduction to Oracle: SQL and PL/SQL
  • Oracle: Enterprise DBA Part 1A
  • Tivoli Top Gun (~200 class hours on Tivoli software deployments)
  • Tivoli Framework certification
  • Windows NT Administration
  • BS - Computer Science and Mathematics, ~60 hours complete
    College of Natural Sciences, University of Texas at Austin

PROFESSIONAL EXPERIENCE OVERVIEW

The following are listed in order of the most recent year of association, excluding most contract work. Note that Netpliance actually became TippingPoint, and Landmark Organization merged with FaulknerUSA.

PROFESSIONAL EXPERIENCE DETAILS

Software Engineer (September 2016 - now) Kershner Trading Group

Sofware development and devops.

Senior Software Developer (August 2015 - April 2016) TRUECar Inc

Software engineer with the Dealer product team. Worked with our new and legacy code, architected the new backend data model, extended REST APIs in both Python Flask and Ruby on Rails services, coördinated extensively with other teams and geographically separated members of our own team to contribute code to other projects when they were related to our own, and recruited and vetted candidates for our internship program.

  • Lead an early, successful team coding initiative of using Rails and React for a prototype of a new feature based on one of our legacy Python service
  • Technology evangelist - migrated backend services from using MSSQL stored procedures to a REST API service wrapper around Amazon's Elastic Search database, and lead the retargeting of some legacy approaches to instead using PostgreSQL on Amazon's RDS service
  • Hardcore supporter of unit and integration testing - quadrupled the number of tests on our team's core product and streamlined the use of the resulting thousands of tests for both quick thorough runs on developer laptops while still allowing the much slower, exhaustive approach typical for Jenkins
  • Acted as mentor when needed
  • Wrote and urged documentation

I normally don't comment on groups, but TrueCar's dealer software team was exceptional, working together unusually smoothly and well, thanks in great part to Jay Connelly's role in building the team.

Software Engineer (September 2013 - May 2015) Draker / Solar Power Technologies Inc

Developed new and improved existing backend services, mostly cloud-based backend services with REST APIs, as well as working on the software images for small Linux computers deployed into customer locations for monitoring many thousands of remote devices. The software mix was a great deal of Python with a fair amount of Linux and shell work and a small amount of C.

Senior Developer (April 2012 - January 2013) CanWe Studios

Startup madness:

  • Social network data modelling and analysis
  • Core designer for the second version of underlying Brain
  • Python, mixed SQL+NoSQL (Cassandra, Couchbase, PostgreSQL), Git
  • Extensive DevOps in the Amazon EC2/VPC cloud using boto
Senior Developer (February 2011 - December 2011) Tippr

One of several senior members of the software team behind Tippr, a grouped buying site and collaboration nexus for publishers and merchants.

  • Senior software engineer for core logic/models with a secondary role as dev-ops/admin across all testing and production clusters
  • Heavy use of Python (with Django and extensive unit/system testing) for the primary application coding, git on GitHub for source code control, Chef (and some Ruby) for automated deployment, PostgreSQL (with master replication and read-only slaves) for the backend, Linode VMs with StackScripts for production, integration with Cloudkick (to augment Loggly and Tracelytics)
  • Supported the per-developer VM clusters, built under Vagrant but used nearly identically to the Linode clusters
  • Wrote most of our recent developer technical documentation
  • A plethora of other things, typical in highly functioning startups
Automation Framework Engineer (October 2008 - February 2010) Dell / MessageOne / Volt

Various internal software engineering projects, with some work in Clojure and a lot more in Python, including the following (descriptions are limited since these are not public projects):

  • Co-design and implementation of a new support infrastructure for software regression testing in complex environments using automatically-created networks of virtual computers
  • Major extension to the distributed monitoring system used for one of Dell's in-production, customer-facing projects, followed by a reimplementation of it in Clojure
Network Architect/Manager (January 2008 - April 2008) Axirim

The core deployment idea was to build VMs for testing that were then automatically installed as non-virtual production machines in the colocation facility.

Systems Architect (October 2006 - 2008) (confidential client)

Principal designer and implementor of a globally-scoped, authenticating transaction system for a company in pre-startup phase. Core work was implementing a biometric authentication system around an Authentec fingerprint system, including reimplementing the userspace driver (in C++), along with an OpenGL-based demo of the system. All other information confidential and proprietary

Senior Systems Administrator (May 2004 - February 2007) Catalis / ReCare / Isgenesis

Unix systems administration using LDAP, Kerberos, and AFS in a medium security, defense-in-depth environment. Controlled IT-related policy, procedures and support structures, all publicized on internal web areas and a central Wiki. Ran the IT and public websites, CommuniGate SMTP/IMAP email, Asterisk VOIP phone services, all core infrastructure and firewalls, and various Xen-based virtual instances for specific services.

Consulting Systems Analyst (March 2000 - December 2003) FaulknerUSA / Landmark Organization

Consulting, network and Linux systems administration, mostly performed remotely. I originally Joined Landmark Organization and was retained by FaulknerUSA after their merger. Orchestrated much of the email, web, and domain switch-overs during the merger.

Embedded Systems Software Engineer (March 2001 - September 2001) TippingPoint Technologies

In Netpliance's new incarnation, I designed and implemented much of the embedded software and external API for the prototype of TippingPoint's UnityOne Intrusion Prevention Appliance, supporting deep TCP/IP packet inspection and conversion. Acted as (co)liaison to other teams developing management software for the product. Other key contributions included automated per-module regression testing, literate programming methods to expose the code's own prototypes and per-function documentation to the other development teams on the web, and development of a scripting language for a network-controlled traffic generator to support regression testing.

Network Architect / Team Lead (May 2000 - March 2001) Netpliance

Team co-lead of core business systems administrators, responsible for extension of comprehensive systems monitoring, database integration, network capability research and expansion, process development and documentation, programming of special projects. Involved with some new product feasibility and marketability discussions. Developed new software supporting business goals. including a 3D realtime RADIUS connection visualizer in OpenGL.

Senior Software Engineer / Writer (February 1998 - April 2000) IBM / Tivoli Systems

Developed training courses for Tivoli's prerelease enterprise-wide system administration offerings, typically for Tivoli's most complex products and most sophisticated target groups. I was responsible for several successful innovations in courseware design and instruction, which led to my assignment to join the Tivoli virtual-reality training project. Directly involved in creating courseware for the following (most recent first):

  • Policy Director (research)
  • Security Management Implementation (update)
  • Cross-Site (wrote)
  • Tivoli Product Overview: GEM demonstration package (wrote)
  • Business Systems Management (co-wrote)
  • Framework I and II (co-wrote)
Director of Technical Instruction (April 1991 - February 2002) Resource Development Academy

Director of Unix and C/C++ instruction at the Resource Development Academy. Class instructor, commercial web designer with credit card support via Perl CGI, postmaster and sole site admin for heterogeneous network (SunOS/SCO/Linux/Windows). Trained Origin's MIS staff, Ultima Online's Unix staff and taught OO methods to a number of Ultima Online's programmers. Subcontracted out for Unix systems analysis, teaching, and lectures, both civilian and military.

Unix Tools Specialist (June 1994 - 1999) Institut für Informatik, Freie Universität Berlin

Member of the extended staff group at the Freie Universität Berlin, a volunteer position, providing tools support (GNU utils, X11R6, etc.) on a volunteer basis. Most work was done during a sojourn to Berlin in 1994. Developed a model for managing networked software installations, called "pods", with automatic user path generation and largely user-transparent support for adding, removing, and consolidating pods, as well as moving them between servers.

Unix Systems Analyst (June 1994 - April 1997) Origin Systems

Sole (until mid 1996) Unix systems administrator for a medium-sized network of Silicon Graphics machines at Origin Systems, ranging from desktop workstations to a half-million dollar SGI Onyx RE2, working tangent to the PC/Macintosh technical staff. Involved in or responsible for all Origin Internet services. My game credits include:

Technical details: extensive experience with Silicon Graphics under IRIX 5 and 6, alphanumeric messaging from the command line with web-integration, spatial graphics programming in GL and OpenGL, X toolkit/widget programming in C and C++, PERL 5, including parsing of DNS tables, SGI's native network time service, m4, SSH, MIME, XNTP, installation of ATM over CAT5 and fiber, PC/Unix file-sharing with Samba on the SGIs, software-controlled processor-to-user allocation in a 6 processor SGI Onyx/6 RE2, installation/administration of a satellite-based USENET newsfeed, HTML through version 3.2, VRML 1, creation of WWW site-information centers, internal newsgroup administration with web-integration, web-availability of all SGI-based files, Unix-based robot tape library administration, image conversion, data analysis, web-based generic survey forms, automated multi-host configuration, remote administration of the Baltimore site, dangers of the upcoming year 2000 problem, Photoshop, some Alias/Wavefront and Softimage.

Systems Operator (March 1990 - December 1991) General Electric Network for Information Exchange

One of the several Systems Operators for the Unix Roundtable on the General Electric Network for Information Exchange (GEnie), acting as consultants, administrators, and conference hosts. GEnie had around 200,000 subscribers, with the simultaneous load peaking at over 3500 users from the USA, Canada, and Europe.

Systems Analyst (November 1990 - December 1990) Pencom, for IBM

Employed by Pencom, contracted to IBM. Acquired to perform ANSI/C systems and kernel programming on the RISC/6000 in the area of OSI reference model protocol implementation under Unix/AIX. All other information confidential and proprietary.

Assoc Systems Analyst (October 1989 - November 1990) Microelectronics and Computer Technology Corp / MCC

Retained by MCC. In addition to previous duties (Systems Technician, q.v.), began building an effective base for software development with a concentration on X11 and the various GNU software packages. Initiated diagnostics to accrue empirical data for use in stabilizing and extending the network. Added world-wide realtime communication software. Consulted on equipment and software purchases with management. A progress summary from 1989-09 is available.

Technical details: advanced sendmail configuration, user login script canonicalization (for heterogeneous shells), user window system configuration canonicalization, network time synchronization, IRC site administration, FrameMaker under X11, hardware hacks on 1/2 inch tape drives, YP mail aliases, Emacs LISP, internationalization of Emacs through C and LISP, kernel tuning to increase max process count, use of the find(1) command, advantages of large read/write calls and mmap(2), file system consistency verification, TOPS Sun/Macintosh file and print sharing, Amiga/Unix integration, some C++ (GNU g++), X11 programming, basic VLSI chip editor design, C++ coding of TCP/IP communications, a brief exposure to the NeXT at OS version 0.8.

Systems Technician (September 1988 - October 1989) Microelectronics and Computer Technology Corp / MCC

Hired by the M.C.C. Packaging/Interconnect for the purpose of assembling the many separate Sun workstations within the program into a working whole. Ministered to the needs of CAD, modeling, and various development groups by writing, installing, documenting, and maintaining applicable software. Configured the mail, Yellow Pages, and TOPSprint systems. Created and maintained a network-wide directory structure and user environment.

Technical details: admin level Unix experience, Bourne shell scripting, basic sendmail configuration, TCP/IP Ethernet (thicknet and thinnet), workstations as routers, DNS (long before most sites), NFS, YP/NIS, Frame, SunView and X11 (including simultaneous use on one workstation, USENET news administration, printing and print filters, plotting, network performance analysis, importation of Internet software, process control scripting, disk partitioning, backups, TFTP, BOOTP, GNU software, kernel tuning, user account management, 3rd party software installation, user support, PC/Sun gateway mechanisms, EEPROM parameter configuration, ANSI C (GNU gcc), sed, awk, basic C coding of TCP/IP communications, automated fetching and translation of the sri-nic.arpa host table.

Mathematics Tutor - Selected Topics in Advanced Mathematics (January 1988 - April 1988) (private employ)

Private tutor for the course based upon the text Selected Topics in Mathematics. Instruction proceeded throughout the semester. Topics included a regrounding of the student's motivation towards and knowledge of algebra, and proceeded through matrices, topology, statistics, use of arbitrary bases, the derivative, etc.

Research Lab Asst (September 1987 - September 1988) University of Texas at Austin Computation Center

Acted as University of Texas Computation Center RJE operator for processes on the IBM, DEC-20 and RJE links spooling to various output sites across the University campus. Supported users in the Sun workstation laboratory during light-load hours, through demonstration of use and customization of Unix on Sun workstations, networking, scripting, and the SunView and X10+ Windowing environments. Created group Talisman, which worked in part as a Unix security tiger team in coöperation with primary UT Computation Center systems administrators.

AWARDS

  • Co-Winner, Spring 1990 IEEECS national programming competition

ACTIVITIES

  • Contributing writer and financial supporter of Wikipedia.
  • Software/Internet adviser to several startup ventures.
  • Unix support consultant to a few individuals and companies.
  • Programming staff, 1991 IEEECS national programming competition
  • Co-Founder, Group Talisman
  • Moderate fluency in German, and some coursework in Japanese.
  • Go, Inline skating, Saber, [music] Composition, Riding, Linguistics, Flying.
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Walk without rhythm and you won't attract the worm.
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alexsiodhe, christopher north-keys, christopher alex north-keys