For  embedded developers, you can become a Microsoft Certified Technology Specialist for Windows Embedded CE 6.0.  Here is a snippet on the related exam from this page:

Certification Exam #70-571: TS: Microsoft Windows Embedded CE 6.0 Development

This exam was designed for developers with two to three years of experience in an embedded system environment, one year of experience using Windows Embedded CE, and six months of experience using Windows Embedded CE 6.0.  Candidates may be an embedded developer, embedded engineer, device driver developer, board support package engineering developer, field application engineer, and/or quality assurance engineer. Candidates typically develop, implement, test, and support embedded devices. In addition, candidates should have a good understanding of Microsoft Visual Studio 2005 with Platform Builder, C, and C++.  Get a full overview of the topics covered by the exam. 

For the free exam preparation kit, Microsoft and Windows Embedded Partner Adeneo have collaborated to create a free, downloadable Preparation Kit to help experienced CE developers prepare for the exam.  Register and download the Preparation Kit today in a language of your choice!