Expert Overview

Oren Eini is the author of Rhino Mocks, one of the most popular mocking frameworks on the .NET platform, and is also a leading figure in other well known open source projects including NHibernate, RavenDB, the Rhino Tools Suite and the Castle project.

Oren Eini has over 15 years of experience in the development world with a strong focus on architecture and best practices that promote quality software and zero-friction development.

An internationally known presenter, Oren has spoken at conferences such as DevTeach, JAOO and Oredev, and is the author of the book "Building Domain Specific Languages with Boo", soon to be published by Manning. Oren, using his pseudonym as Ayende Rahien, is a frequent blogger at His hobbies include reading fantasy novels, reviewing code, and writing about himself in the third person.

Oren is also a Microsoft MVP, a fact that he tends to forget when writing a bio.

Oren has been primarily involved in projects that are part of the Microsoft and .NET ecosystem and has been awarded the Microsoft's Most Valuable Professional since 2007.

A popular international expert, blogger and speaker at many international conferences including Skills Matter's NOSQL eXchange and The Progressive.NET Tutorials as well as at other conferences like DevTeach, JAOO, QCon, Oredev, NDC, Yow!, Oren regularly shares his skills, expertise and experience with the developer community.

He has also been sharing his vision and skills at Skills Matter's In-the-Brain or Real Experts Sessions and by running his RavenDB classes and his NHibernate classes here at Skills Matter.

Oren is the author of the book "DSLs in Boo: Domain Specific Languages in .NET" (Manning).

Oren, using his pseudonym as Ayende Rahien and is a fervent blogger on

Projects Oren leads or contributes to:

Things I'm Doing
Talks I've Given

Talks I've Given