Shortcodes not interpreted

Hi,

I try to customize the jobs’s list with shortcode but they are not interpred correctly!
I put shortcodes in a page, and in Front end there is not the result of the shortcode, but the shortcode himself, like this :

[job_loop]
[if_job_categories][/if_job_categories]
[job_field_loop]
[if_job_field][/if_job_field]
[/job_field_loop]
Titre [job_icon] [job_link][job_title][/job_link]
Catégories [job_category_links]
[job_field_label] [job_field]
[job_apply_link]Postuler Maintenant[/job_apply_link]

[/job_loop]

[if_job_page_count]
[job_page_previous_link]Page [job_page_previous_number][/job_page_previous_link]
Offres [job_page_minimum]-[job_page_maximum] de [job_total]
[job_page_next_link]Page [job_page_next_number][/job_page_next_link]

[/if_job_page_count]

Please, what’s wrong???

http://wordpress.org/extend/plugins/job-manager/