Arjen Lentz

Current

Co-founder at Upstarta.biz
Initiative Initiator at BlueHackers
Project lead at OurDelta

Exec.Director at Open Query
Co-author and Technical Editor at Various publishers (O'Reilly, Pearson, McGraw-Hill, ...)
Conference Presenter at Various events

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Past

Director at Open Source Industry Australia, Ltd.
Conference Director at Open Source Developers' Conference
Owner at Lentz Internet Services (Sole Proprietorship)

Support Engineer at MySQL AB
Trainer at MySQL AB
Project Lead at MozOO.org
Community Relations Manager at MySQL AB
Technical Writer at MySQL AB
Owner at Lentz Software-Development
ISDN Sales Engineer & Marketing at CCG

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7 more...

Recommended

42 people have recommended Arjen

Connections

500+ connections

Industry

Information Technology and Services

Websites

Arjen Lentz’s Summary

Open Query offers expertise for MySQL and other Open Source tools through training and consulting. As we value our customers, we charge sensible rates. If you are in need of our services, please contact me through LinkedIn's InMail or via openquery.com.au
If it's an urgent issue, you may also try Skype (arjenlentz).

Arjen Lentz’s Specialties:

Training for MySQL and other Open Source tools, performance tuning and best practises, Open Source licensing, strategy and business models,
Blending technology and people.

Arjen Lentz’s Experience

Co-founder

Upstarta.biz

(Professional Training & Coaching industry)

July 2009 — Present (6 months)

A group of people who run, or are interested in running, their business according to a set of principles that make them more people friendly (both clients and self), better for the environment, resilient to recessions, and more. While being particularly suited to on-line and Open Source related endeavours, we are by no means limited to that. In addition, the guidelines also apply well to non-profits and other organisations.
Initiative Initiator

BlueHackers

(Health, Wellness and Fitness industry)

December 2008 — Present (1 year 1 month)

The objective of this initiative is to make visible that there are many fellow geeks among us who are intimately familiar with depression, anxiety, or bipolar disorder. It helps to know you’re not alone.
Because every black sheep has a family!

Apart from the website (http://bluehackers.org) resources and stories, BlueHackers is just a quiet sign of understanding, which is actually a really big deal for people to see. You will see stickers with the distinct bluehackers logo on people's laptop when you visit a conference or user group.
Project lead

OurDelta

(Information Technology and Services industry)

October 2008 — Present (1 year 3 months)

OurDelta produces enhanced builds for MySQL, with OurDelta and third-party patches, for common production platforms. All the builds are freely available for download.

OurDelta has most accurately been described as a "distro for MySQL", similar to how Red Hat and Ubuntu are distros of Linux.
Exec.Director

Open Query

(Privately Held; Information Technology and Services industry)

September 2007 — Present (2 years 4 months)

Open Query (http://openquery.com) delivers training and expertise for MySQL and other Open Source tools, through

- Architecture, DBA-on-demand and Pro-Active Support for MySQL
- Workshops & Training - Small interactive classes using materials developed by Open Query, always relevant and up to date.

We focus on MySQL and related technologies, with particular expertise in design, scale-out and performance tuning. All you need!
We charge reasonable rates, as we feel it most important to build an ongoing relationship. Our training and consulting is focused on giving you the additional information and skills you need to help yourself.
If you don't have the staff internally, our remote service subscription is there when you need it. Our pricing is simple, clear, affordable, and published on our site.
Co-author and Technical Editor

Various publishers (O'Reilly, Pearson, McGraw-Hill, ...)

(Publishing industry)

August 2001 — Present (8 years 5 months)

Co-author of High Performance MySQL (O'Reilly) 2nd ed. (2008)
Tech editing for a number of books, most specialising in MySQL.
Conference Presenter

Various events

(Information Technology and Services industry)

August 2001 — Present (8 years 5 months)

I frequently speak at conferences, seminars, forums and user groups, including tutorials and keynotes. Main topics are MySQL related, also open source business and development models.
OSCON, MySQL Users Conference, LinuxTag Germany, International PHP Conference (Frankfurt), Open Source Database Conference (Frankfurt), LinuxConfAU (AU/NZ), LinuxWorld Sydney, Sydney Open Source Forum, Tasmania Open Source Forum, System Administrators Guild of Australia (SAGE-AU(, Australian Computers in Education Conference (ACEC), Dutch Unix Users Group (NLUUG) Spring Conference, System Administrators & Network Engineers Conference (SANE - NLUUG/USENET), ...
Director

Open Source Industry Australia, Ltd.

(Non-Profit; 1-10 employees; Information Technology and Services industry)

January 2004 — May 2008 (4 years 5 months)

Founding director of OSIA (osia.net.au). OSIA is the national industry body for Open Source within Australia, furthering the cause of both Free and Open Source Software (FOSS) in Australia and to help the members to improve their business success in this growing sector of the global Information and Communication Technology (ICT) market.
Conference Director

Open Source Developers' Conference

(Computer Software industry)

January 2007 — December 2007 (1 year )

Led the OSDC 2007 Brisbane Conference team, from the initial bid for the event to successful execution with 40% attendee growth over previous year, and a large sponsorship base to provide the OSDClub organisation with more seed capital for future conferences and its other activities.
Owner
Lentz Internet Services (Sole Proprietorship)

(Sole Proprietorship; 1-10 employees; Information Technology and Services industry)

February 2004 — August 2007 (3 years 7 months)

Advises on Open Source and related Business, Intellectual Property and Licensing questions.
Support Engineer

MySQL AB

(Privately Held; 201-500 employees; Computer Software industry)

August 2006 — June 2007 (11 months)
Trainer

MySQL AB

(Privately Held; 201-500 employees; Computer Software industry)

August 2001 — June 2007 (5 years 11 months)

(MySQL employee # 25)
MySQL Trainer in Australia and New Zealand.
Business development in Australia.
Project Lead

MozOO.org

(Computer Software industry)

September 2003 — December 2006 (3 years 4 months)

MozOO.org (http://mozoo.org/) is a set of productivity tools for Windows. It is specifically aimed at home and small business users who "just want to get on with work". MozOO.org demonstrates a pragmagic view of "marketing" Open Source through a complete practical solution with a narrow focus.

Consisting of OpenOffice.org, Firefox and related tools, the MozOO.org initiative was successful as more and more people now use these tools. The Ubuntu LiveCD also contains an easy install of these apps for Windows. And thus, our separate work is no longer required!
Community Relations Manager

MySQL AB

(Privately Held; 201-500 employees; Computer Software industry)

October 2004 — July 2006 (1 year 10 months)

This job involved cool stuff like jet-lag, hanging out with MySQL users everywhere and drinking assorted beverages on company time. Developed planetmysql.org as a key community medium. Program chair for the MySQL Users Conference 2005 and 2006 (1650+ attendees, 130+ talks with 8 parallel tracks over 4 days).
Technical Writer

MySQL AB

(Privately Held; 51-200 employees; Computer Software industry)

August 2001 — October 2004 (3 years 3 months)

(MySQL employee # 25)
Technical Writer in charge of the MySQL manual.
Publication of the MySQL Manual through O'Reilly.
Owner

Lentz Software-Development

(Computer Software industry)

February 1990 — June 2000 (10 years 5 months)

Software Development and Consultancy.
Specific expertise in data communication over public networks.
ISDN Sales Engineer & Marketing

CCG

(Privately Held; 1-10 employees; Telecommunications industry)

1995 — 1997 (2 years )

Additional Information

Arjen Lentz’s Websites:

Arjen Lentz’s Interests:

MySQL, PHP, C, OSS Community, conference organisation, licensing, development methods and processes, business models and strategy/marketing, technology education, psychology, cooking, gardening, sustainable development

Arjen Lentz’s Groups:

Open Source Developers conference 2007 (osdc.com.au)
Founding director - Open Source Industry Australia (osia.net.au)
Press team - Linux Australia (linux.org.au)
MySQL User Group Brisbane (mysql.meetup.com/84)
MySQL Guilds (Writers,Experts,Speakers, dev.mysql.com/guilds)
FidoNet (long time ago - The-Box, Xenia, Hydra)