I am a developer on the OpenEMR project, the most popular open source electronic health records and medical practice management solution [0][1].

A few more people are needed on a codebase modernization project that I'm running. The project primarily addresses converting the SQL to use Doctrine2 [2] and refactoring code to use MVC along the way.

Not only can you gain experience with a modern ORM solution, but you will get to contribute to a high-impact [3] open source project that enjoys a large audience of appreciative users around the world!

If you're interested, hit me up via email (in profile).

[0] http://open-emr.org/

[1] https://github.com/openemr/openemr

[2] http://www.doctrine-project.org/

[3] http://www.emrandehrnews.com/2017/03/02/openemr-achieves-complete-meaningful-use-certification-with-release-5-0