Show Authors in a Page Based on Selected Metadata - wordpress

Question

I'm working on a new project where registered users can select multiple careers in the User Profile page in wordpress Admin. I have been able to add the check boxes of different careers to the User profile page which registered users can check/select.
At the frontend, I created a page for each of the careers. I want a scenerio whereby if one should go to page named "Programmer" for example, one would be shown all the authors that check "Programmer" in their profile. The authors info like avatar, name and links to all posts would be shown in a loop
I don't know how to go about it. Hoping you guys here can assist with this.
-------------------------------EDITED---------------------------
With the help provided by #AustinWinstanley thus far, here is my code
$user_query = new WP_User_Query( array( 'meta_key' => 'career', 'meta_value' => 'programmer' ) );
if ( ! empty( $user_query->results ) ) {
foreach ( $user_query->results as $user ) {
echo '<p>' . $user->display_name . '</p>';
}
} else {
echo 'No users found.';
}
With the above query, any author whose career field's value is programmer is listed. The above code is suitable if the value field for Career is an input field. I don't intend to make career's value to be an input field, rather I want it to be checkboxes where authors can check multiple values.
Since it's not going to be an input field, but rather checkboxes, how do I edit this line to reflect what I want?
$user_query = new WP_User_Query( array( 'meta_key' => 'career', 'meta_value' => 'programmer' ) );

Answer 1

You probably want to query users by meta data. Something like this:
// Set this value by whatever you're searching for
$career = 'programmer';
$args = array(
'meta_query' => array(
'relation' => 'AND',
array(
array(
'key' => 'career',
'value' => $career,
'compare' => 'LIKE'
// Or 'compare' => '='
)
)
)
);
$user_query = new WP_User_Query( $args );
$result = $wp_user_query->get_results();
Edit:
For the front end form:
<form method='post'>
<input name="careers[]" type="checkbox" value="programmer"> Programmer
<input name="careers[]" type="checkbox" value="accountant"> Accountant
<input name="careers[]" type="checkbox" value="manager"> Manager
<button name="career-search">Search</button>
</form>
In your plugin or function/includes:
function careers_postback( $query ) {
if( $query->is_main_query() && isset( $_POST['career-search'] ) ) {
$careers = $_POST['careers']
$meta_query = array();
foreach( $careers as $career ) {
$meta_query[] = array(
'relation' => 'AND',
array(
array(
'key' => 'career',
'value' => $career,
'compare' => '='
)
)
);
}
$args = array(
'meta_query' => $meta_query
);
$user_query = new WP_User_Query( $args );
$result = $wp_user_query->get_results();
set_query_var( 'search-career-results', $result );
// Here you would include your search template and call exit
// In your template, use `get_query_var( 'search-career-results')
// Then check if there are results and list them if there are.
}
}
add_filter( 'pre_get_posts', 'careers_postback' );
This is in general. I haven't fully tested it because I'm not typing it in an editor. But this is the full solution to check boxes and get users by their meta data using the data. If this doesn't work in general, then you are doing something you aren't revealing. Like not saving careers to user meta data.