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Oren Eini



Oren Eini has over 20 years of experience in the development world with a strong focus on the Microsoft and .NET ecosystem. And has been awarded the Microsoft's Most Valuable Professional since 2007.

An internationally known presenter, Oren has spoken at conferences such as DevTeach, JAOO, QCon, Oredev, NDC, Yow! and Progressive.NET.

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

Oren's main focus is on architecture and best practices that promote quality software and zero-friction development.

Oren, using his pseudonym as Ayende Rahien, is a frequent blogger at

Oren Eini is the founder of Hibernating Rhinos LTD, a Israeli based company, offering:
Consulting and mentoring services
Code reviews
Architectural reviews and system design
developer productivity tools for OLTP applications such as:
NHibernate Profiler (
Entity Framework Profiler (
No SQL solutions
RavenDB - a native .NET second generation document database (

Oren 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:
Rhino Tools Suite
Rhino Mocks - mocking framework
Rhino Commons - infrastructure framework
Rhino Igloo - MVC framework for WebForms
Rhino Security - security infrastructure for NHibernate
Rhino DSL - Domain Specific Language building toolkit
Rhino ESB - Distributed Service Bus framework
Rhino Licensing - licensing infrastructure
Rhino ETL - Extract/Transform/Load framework
Rhino PHT - Persistent Hash Table for .NET
Rhino DHT - Distributed Hash Table for .NET
Rhino Queues - Distributed queuing infrastructure
Castle project

His hobbies include reading fantasy novels, reviewing code, and writing about himself in the third person.

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