Permalink location/title to title/location

I have been trying to understand tutorial from here: https://wpjobmanager.com/document/tutorial-changing-the-job-slugpermalink/, but it is lacking descriptions and for me – non-programmer its absolutely not clear what to do in here.

I want to make blabla.com/jobtitle/location

So far I have figured this code:

add_filter( 'submit_job_form_save_job_data', 'custom_submit_job_form_save_job_data', 10, 5 );

function custom_submit_job_form_save_job_data($data, $post_title, $post_content, $status, $values ) {

    $job_slug   = array();

	// Prepend with company name
	if ( ! empty( $post_title['job']['job_title'] ) )
		$job_slug[] = $job_title['job']['job_title'];

	// Prepend location
	if ( ! empty( $values['job']['job_location'] ) )
		$job_slug[] = $values['job']['job_location'];

	$job_slug[] = $post_title; 

    $data['post_name'] = implode( '-', $job_slug );

    return $data;
}

but this code gives me blabla.com/location-jobtitle/
and what I need is blabla.com/jobtitle/location/ or at least
blabla.com/jobtitle-location/

It looks like I just need to swap something, and I tried many ways,but I was not able to figure it out. Could you please help me a little here?
Thank you

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