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 the administration and development of Database Systems and Datawarehouses in Oracle and Sql Server.

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 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


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 at the moment that Bitcoin mining started to decline and Scrypt mining had started with Litecoins. I have developed deep knowledge about this field and I am a strong believer that within a couple of years the current monetary system will be completely replaced with a new monetary system which will be based on Digital Currencies.

IMHO however Bitcoin and Cryptcocurrencies are not that digital system yet. It was inplemented to achieve distributed consensus and anonimity but has big disadvantages which makes it unsuitable for business systems in its present form. The bitcoin blockchain is slow and expensive and misses essential business transaction information. A new system needs to be developed that could be based on distributed database technology.

"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


I am not availible for fulltime IT jobs so please do not email me for such job offers !!!
For interesting short-term or parttime assigments however you can always contact me.

Possible assignments that could interest me are:

  • Standard or Customized Trainings Databases, Programming or other IT Topics.
  • Database Performance and Tunic assignments
  • Database Migration projects.
  • IT Infrastructure Analysis and Advice.
  • Building/hosting Dynamic Websites
Interesting offers or requests for my latest CV can be forwarded to: Email-address