most companies publish their entire job board as public JSON, hours before the aggregators show it
the whole product is one field everybody else throws away
every company job board hands out an exact publish timestamp on every posting. greenhouse, lever, ashby, all of them, free, no auth. and basically every job site strips it and shows you "posted recently" instead.
i kept it. 998 boards, 47,297 open roles, every one with the real minute it went up.
turns out 22.9% of those open roles were first posted six or more months ago. 10,926 of them. that number only exists if you kept the dates, which is the entire moat. someone funded copies my search in a weekend and still can't tell you that.
cost me a month of polling before the data was worth anything. no way to shortcut it either, you just have to start early and wait.
47.9% publish a salary too, which i only get because i parse the description text rather than the salary field. greenhouse doesn't have a salary field at all.
link - firstin-delta.vercel.app happy to get torn apart on the parsing