Most developers are capable of writing FOSS code. What you need is to make sure that the code base remains compliant (licensing quality). I talk from experience of our own software as FOSS and the fact that I specifically focus on licensing compliance:
http://www.fsf.org/licensing/teamWe develop the tooling that the Linux Foundation makes available on their side for evaluating the licensing quality. Look here: http://spdx.org/tools/community/triplecheck-reporter
Somewhere around the web you should be able to find my contact details if you want to exchange some tips on things to do or avoid in FOSS development. Just drop me a message.
