Custom PHP code to generate a custom link from WP Job Manager Field Editor field, with the field value in query args for the link

functions.php

<?php

$candidate_name = get_custom_field( 'candidate_name' );

if ( ! empty( $candidate_name ) ) {
	
	$some_url = 'http://somedomain.com/';
	
	$search_url = add_query_arg(
		array(
			'candidate_name'   => $candidate_name,
		),
		$some_url
	);
	
	// If the value from candidate_name was 'John', the code above essentially creates this URL:
	// http://somedomain.com/?candidate_name=John
	
	echo "<a class=\"some-custom-class\" href=\"{$some_url}\" target=\"_blank\">Some Link</a>";
	
}