WP Job Manager Field Editor is the only plugin that will allow you to completely customize all form fields for WP Job Manager. Not only will you be able to customize all of the default fields for submitting job posts, but you will also be able to create your own custom fields as well. Want to change the wording for the label of a default field? Maybe you want to change the placeholder (text inside input field), or disable it completely, well WP Job Manager Field Editor does all of that and more.
This is the EXACT same plugin as distributed by the developer on sMyles Plugins. The developers’ links are provided above.