Nullentropy - Ronald Ossendrijver

it@ossendrijver.online

Solution Architect and .NET Developer with a passion for delivering high value IT.

Entropy is a scientific concept that is most commonly associated with a state of disorder or uncertainty. Systems, including IT systems, tend to progress in the direction of increasing entropy when left unchecked. Nullentropy is a concept from the Dune Universe by the American author Frank Herbert. It is a place where entropy is kept in check. As an Architect and Developer, managing disorder and uncertainty in IT systems is one of my top priorities. Hence my company name: Nullentropy. Also, it is a tribute to Frank Herbert's Dune.

KVK: 89386604
BTW: NL004723149B42

Experience

Enterprise Architect

Dutch Police

Advisor to the CIO. Representation of the Police in the architecture of the Dutch criminal justice system. Responsible for further development and maintenance of the enterprise architecture and sparring partner for domain architects and solution architects.

February 2022 - Present

.NET Developer

Nullentropy

Development of https://treachery.online - a digital version of the Dune Board Game, started as a hobby project to continue playing during the Coronalockdowns. The original version of this game was published in 1979 and is based on the book series by Frank Herbert. Treachery.online is used daily by hundreds of fans worldwide to play against each other or against the AI.

January 2020 - Present

Enterprise Architect

Statistics Netherlands

Advisor to the CIO. Responsible for the development and maintenance of the enterprise architecture. Development of cloud strategy, data strategy, application strategy and open source strategy. Coach for agile working / portfolio management.

September 2016 - February 2022

.NET Developer ยท Software Architect

Statistics Netherlands

Software development (full stack; C#, ASP.NET, SQL, Entity Framework, TFS) to support data science and statistical processes in the role of .NET and SQL developer, software architect, project manager, scrum master and product owner.

February 2008 - September 2016

IT Consultant

KPMG

IT audit and consultancy assignments in the field of SAP processes & authorizations, SAP data analyzes, security and general IT controls.

February 2003 - February 2008

Education

Delft University of Technology

Master of Science
Computer Science - Information Systems Design
August 1997 - February 2003

Einstein Lyceum

Gymnasium B
August 1991 - August 1997

Skills

Programming Languages & Tools
  • C#
  • .NET 7.0
  • Blazor
  • SQL Server
  • Javascript
Methods & Frameworks
  • TOGAF9
  • Agile Development & Scrum (Certified Scrum Master)
  • Domain Driven Design
  • SOLID

Interests

Music

I enjoy all kinds of music, but mostly music from the end of the 19th and the first half of the 20th century. My favorite composers are Dmitri Shostakovich, Gustav Mahler and Sergei Rachmaninoff.

Games

Another passion of mine is gaming, both computer games and board games. Currently, my top board games are Dune, of which I made a digital implementation (https://treachery.online) to be able to keep playing during COVID19, and Dune: Imperium. I also play several Role Playing Games: Dungeons & Dragons, Cyberpunk: Red and Dune: Adventures in the Imperium.

Movies, Series and Acting

I have a broad interest in Movies and Series. I love science fiction and fantasy. I'm really looking forward to Dune: Part Two. Also, I've played some roles as an actor (amateur level) in King Lear (Shakespeare), The Cherry Garden (Chechov) and Bruid in the Morgen (Hugo Claus).