Reinier Erdtsieck

Drs. R.D.J.Erdtsieck · Email

I have been active in IT for 30 years now and have worked for a lot of companies in the Netherlands in the Industry and also in Government. My main expertise has been the design and development of object oriented software applications and later on in my career Data Analysis and the administration and development of Database Systems and Datawarehouses in Oracle, Sql Server and Sybase.

I am 1st degree teacher in Mathematics and Information Technology and have been active as trainer for Software Technology and Databases since 1996. I have been active as Coach and Project Manager and have a Prince2 Certification.


University Groningen (RUG)

Master Pure Mathematics and Information Technology

August 1982

University Groningen (RUG)

Post Doctorate Business Economics

August 1985


Oracle (PL/SQL) , Sql Server (T-SQL), MySql, Postgresql, Sybase.

Programming Languages & Tools
.NET, Powerbuilder, C++, Java, Python, PHP, Cobol

Other Expertise
Training, Coaching, Website Design/Hosting, Bitcoins/Cryptocoins Technology


HTS Zwolle (Teacher Mathematics)
Atos Origin (BSO)
Logica (CMG)
Sybase INC
Information Management Netherlands
Nuon Energy
Gemeente Almelo


I have build Software and Database Systems for the following Companies:

Gemeente Almelo, ERETA Cairo, Nuon Energy, Police Netherlands, MEE, Alcoa, Fortis, ING, Rabo, ABN Amro,NMB Bank,
Casema, KPN, Bouwfonds, Euler, Nedstaal, Flora, Philips, Kluwer, Holland Signaal.

The Ministeries of Defence, Health, Environment, Social Affairs, Traffic and Finance (Tax Office).

For the full expertise please request my CV


Bitcoin and Crypto Currencies

Since 2013 I have started to be involved in the Bitcoin and Cryptocurrencies world.I have developed deep knowledge about this field and I am a strong believer that within the near future the current monetary system will be completely replaced with a new monetary system which will be based on Digital Currencies.

During the year 2018 Bitcoin prices have fallen down to 3000$ and trading volumes have dropped. For the next year we will see a spectacular rise again for the Bitcoin price and high trading volumes on Exchanges. This new trend can be seen for instance on Binance which has its residence moved to Malta now where Crypto Coins are actively supported.

People who want to start with cryptocoin trading should visit the CryptoCoinsCity for daily trading infomation and also the website CryptoCoinsApp for the download of all necessary Trading Applications.

"The internet is going to be one of the major forces for reducing the role of government.
The one thing missing, soon to be developed, is a reliable e-cash."

(Nine years later, Bitcoin was born)

Professor Milton Friedman, 1999


The genealogy of the Erdtsieck Family

The current Erdtsieck family in the Netherlands has originated from Schildesche Germany.
The first reference mentioned in the archives is Hartwig ERDSIEK who has been living in Schildesche
around 1500. After him there have been 4 generations of ERDSIEK who have been church musicians at
Enger and Herford Germany. They were Johann, Jodocus, Johann Jost and Johann Jobst Erdsiek.
The beginning of the ERDSIEK family has been described in the legendary German Geschlechterbuch band 82

Johann Jobst Erdsiek was asked to play at the Grand Church of Zwolle Netherlands and met there his later wife
Maria Masmann. He was deeply in love with her and decided to marry her and move to Zwolle.
From him the complete later Erdtsieck family in the Netherlands has orginated.
People who are interested in the complete family-tree of the Erdtsieck family can find it here:
Family Tree of the ERDSIEK and ERDTSIECK family

You have to register an account at to be able to view it but it is completely free and
after being a registered member you will be able to add your own family details in the family-tree.
I have researched all this material together with the great Bob Erdtsieck from Winsum Groningen !!!


People with interesting job offers please contact me directly on the email address below.
Possible assignments that could be of interest me are:

  • Standard or Customized Trainings Databases, Programming or other IT Topics.
  • Teaching Mathematics on VWO,HBO,WO
  • Database Performance and Tunic assignments
  • Database Migration projects.
  • Datawarehouse Design and Implementation.
  • IT Infrastructure Analysis and Advice.
  • Building/hosting Dynamic Websites
Offers and requests for my latest CV can be forwarded to: Email-address

Birthplace of ERDSIEK Family in Schildesche

Historic article ERDSIEK family Herford

Erdsiek Family in Geschlechterbuch