Philipp K. Janert, Ph.D.


Email:   janert at ieee dot org
    janert at cpan dot org


  • Analytics expert
  • Author of two books on data analysis
  • Ph.D. in theoretical physics


Data Analysis with Open Source Tools
O'Reilly (2010)
Gnuplot in Action : Understanding Data with Graphs
Manning (2009)


My Perl modules on CPAN.


Languages  Perl, Python, Java, C/C++
Databases  SQL; Oracle, MySQL, PostgreSQL, SQLite
Markup  HTML, XML, DocBook, WAP/WML; LaTeX2e
Platforms  Unix/Linux toolchain
Modeling  OOA&D, UML, ER Diagrams, Database Design

Professional Experience:

2008-   Owner, Principal Value, LLC; Seattle, WA
Principal Value provides consulting services to corporate clients in the following areas:
  • Data Analysis
  • Mathematical Modeling
  • Business Intelligence
  • Corporate Metrics

2010   Author, "Data Analysis with Open Source Tools" (O'Reilly, 2010)
A comprehensive introduction to data analysis for a technical audience.

2007-2009   Author, "Gnuplot in Action" (Manning Publications, 2009)
A book on graphical data analysis using the Gnuplot program.

2003-2006   Technical Program Manager,; Seattle, WA
2006  Technical Program Manager, Transaction Risk Analytics
   Developed a new process to reduce an so-far unrealized form of bad debt, from initial inception, through a workable prototype. Handed project off to implementation team.
2005  Technical Program Manager, TransShipment
   Developed and delivered a new materials handling process, which saves $1.5 million (net) per year in outbound shipping cost.
2004  Process Engineer, Strategic Task Force (Fulfillment Operations)
   Developed analytical predictive models for worker productivity and rolled out new labor management tools based on them.
2003  Process Engineer, Order Picking Team
   Plant Liaison, Sponsor for several Six Sigma Black Belt projects in Amazon's fulfillment centers.

2002   Web-tier Engineer, AltaServ Inc; Kirkland, WA
Architecture, design, and implementation of a 3-tier, web-based workflow automation and document management system for the insurance industry using J2EE.

2000-2001   Project Manager & Technical Lead, Netcommerce LLC; Seattle, WA
Architecture, design, and implementation of a component based, highly scalable n-tier transaction processing engine, for wireless and web-based eCommerce applications using Java and Apple WebObjects.

1998-2000   Software Consultant, iteratec GmbH; Frankfurt, Germany
Analysis, design, and implementation of a 3-tier Client/Server information retrieval system for the airline industry using C++ and BEA Tuxedo on Unix.


1997-1998 Postdoctoral Fellow, MPI fuer Polymerforschung, Mainz, Germany
1992-1997 Ph.D. in Theoretical Physics, University of Washington, Seattle, WA
1991-1992 Graduate Studies, Mainz, Germany
1989-1991 Undergraduate Studies, Goettingen, Germany

Selected Publications:

Data Analysis with Open Source Tools
Gnuplot in Action : Understanding Data with Graphs
A Tale of One Application, a Group of Users, Two Languages, and a Few Tools
Advanced HTML::Template: Filters and Widgets
Embedded Databases
Practical Database Design, Parts 1 and 2


US Patent 7,243,001   Time-based warehouse movement maps
US Patent 7,246,706   Sorting using modular stations
US Patent 7,331,471   System and method for modular sorting stations
Last updated: November 2010