Looking for an OwnCloud developer who is familiar in enhancing the 7.0.x server software:
The present version allows only to share one file via a link sent to a user by e-mail. This needs to be enhanced to support multiple files, i.e. multiple files are selected and these files are shared together. However, it is not allowed to share the whole folder.
Further tasks can be offered to you if you are familiar with Redmine and Ruby on Rails, which need to be integrated with the OwnCloud software.