import company information

The company fields look for specific user meta data – this is stored after a submission.

See here https://github.com/Automattic/WP-Job-Manager/blob/9c9daf29549d8c4e9c64876e96367edb0570eb5a/includes/forms/class-wp-job-manager-form-submit-job.php#L355-L357

e.g. _company_name would store their company name.