Hi neilC,
Please try Views shortcode wpv-if, like this:
[wpv-if f1="wpcf-job-type" evaluate="$f1 = 'permanent'" debug="true"]here display Salary (for permanent)[/wpv-if]
[wpv-if f1="wpcf-job-type" evaluate="$f1 = 'contract'" debug="true"]here display Rate (for contract)[/wpv-if]
More help: http://wp-types.com/documentation/views-shortcodes/#wpv-if
