[@robkk Moderator 11 years, 7 months ago]

here is the list of all bbPress shortcodes

codex.bbpress.org/shortcodes/

you could develop/hire a developer to use something like this

<?php wp_get_current_user(); ?>

codex.wordpress.org/Function_Reference/wp_get_current_user

an alternative would be to use #3

codex.bbpress.org/layout-and-functionality-examples-you-can-use/