Populate current user role in field value with WP Job Manager Field Editor

functions.php

<?php

// This assumes the META KEY for the field is "current_user_role"
add_filter( 'field_editor_auto_populate_current_user_role', 'smyles_auto_populate_set_cur_user_role' );

function smyles_auto_populate_set_cur_user_role( $populate_value ){

	if ( is_user_logged_in() ) {
		$user = wp_get_current_user();
		$role = ( array ) $user->roles;
		return esc_attr($role[0]); // Return first role assigned to user account
	}

	return 'anonymous'; // Return 'anonymous' for users not logged in
}

For this to work, you must create a custom field named "current_user_role" (or update the code to correct meta key), and you MUST enable Auto Populate feature (you don't need to configure the other settings, and it's recommend to NOT enable auto save)