WordPress allow any page to add extra url with it

functions.php

<?php

/**
 * Custom rewrite rule for career page
 */
add_action('init', function(){
	add_rewrite_tag('%office_location%','([^&]+)');
	add_rewrite_tag('%job_position%','([^&]+)');
});

add_filter( 'generate_rewrite_rules', function($wp_rewrite){
	$feed_rules = array(
		'careers/(.+)/(.+)'  =>  'index.php?page_id=62&office_location=' . $wp_rewrite->preg_index(1) . '&job_position='.$wp_rewrite->preg_index(2),
	);
	$wp_rewrite->rules = $feed_rules + $wp_rewrite->rules;
});