JobRoller would be the appropriate theme for your project in this instance, and if you are not planning to make big changes to the layout or hire a web designer to do this, then the standard license would be sufficient. You can always upgrade to developer license at a later date if you found you did need the Photoshop .psd files anyway.
You may also wish to note that there are add ons for JobRoller available in the
AppThemes marketplace which would allow you to extend the theme, without the need for any coding knowledge. Thanks.
