Greenhouse is an applicant tracking system: employers run hiring in it and publish their openings on a public job board it hosts. The board is the part a candidate sees, and the part we collect. Each employer gets a token in the address - job-boards.greenhouse.io/gitlab, job-boards.greenhouse.io/discord - and each job a numeric id under /jobs/.
One board can surface in several places. Older links on boards.greenhouse.io still open it, some boards sit on job-boards.eu.greenhouse.io, and many larger companies send visitors to their own career site, where the Greenhouse job list is embedded and job links carry a gh_jid parameter. The board interface follows the visitor's browser language, while postings stay in the language the employer wrote them in.
Each employer configures its own board: whether departments nest, whether an Office filter appears, whether the New tag and the job counter show, and what goes into the pay block. Software, fintech, gaming and education companies all hire this way, so two boards rarely look alike even though the structure underneath is shared, and an extractor has to read each one as its owner set it up.