Inside a WP Job Manager build
How WP Job Manager is put together
A job is a custom post type with its details in post meta, its type and category in taxonomies, and its lifecycle handled by statuses and a scheduled task that expires listings on their end date. The search page, submission form and employer dashboard are shortcodes with template files a theme can override. That design is why the plugin is so easy to extend: new fields are added through filters on the submission form and the admin screen, and almost every template can be replaced from a child theme. It is also why care is needed. A field added in only one of those places saves on the front end and vanishes in the admin, a bug we are regularly asked to trace.
Add-ons first, then Jobify, then code
The official add-ons cover most of a commercial board: paid listings through WooCommerce, an applications inbox, a resume manager, job alerts, bookmarks and application deadlines. Jobify supplies the design layer and wires those add-ons into one interface, which gives a board a finished look early. The catch is that theme and plugins move together, so we keep every change in a child theme or a companion plugin and never in Jobify itself. Custom development starts where a board's business model does: credits that expire, employer teams sharing one package, salary fields with validation, approval queues with reasons, or an applicant pipeline that goes past "new" and "rejected".
Location search done properly
WP Job Manager can geocode a listing's location and store latitude and longitude with it. Radius search then needs a distance calculation in the query, and on a large board that calculation has to be narrowed first by a bounding box, or it scans every listing. We normalize locations at posting time with address autocomplete, decide how remote and multi-location jobs are stored, and test search speed with a realistic number of listings, not the forty in the demo content.
Getting listings seen
Google reads JobPosting structured data: title, description, date posted, expiry, employer, location, employment type and salary where it is given. Missing or stale fields are the usual reason a board is absent from job results, so we validate the markup per listing, and when a job closes we either remove the markup or retire the page so expired vacancies do not linger in search. Aggregators each want their own feed format and change their rules from time to time, so we build feeds as a configurable exporter. If you need vacancies flowing in from an employer's system, that is an import job with de-duplication, which our WordPress API and integrations team handles.
What strains as the board grows
Filters built on post meta slow down as listings and expired records accumulate. Alert emails sent in one cron run time out. Employers upload logos at full camera size. We archive or purge expired listings on a schedule, move heavy filters to indexed lookups or a search engine, send alerts in queued batches and cache result pages for anonymous visitors.