When you apply to a job, you usually don't know whether it was posted last week or last year. The careers page rarely shows a date. Most job boards behind those pages do store one, though.

I pulled every open job from 20 tech companies' public job boards and looked at when each one was first published.

Disclosure: I built the Career Site Jobs API used for this. It returns open jobs from Greenhouse, Ashby, Lever, Workday and other job boards as JSON, including the posting date.

The setup

Companies: Airbnb, Airtable, Asana, Brex, Cloudflare, Coinbase, Databricks, Datadog, Discord, Dropbox, Figma, GitLab, Notion, Pinterest, Plaid, Ramp, Reddit, Robinhood, Stripe, Twilio

Jobs: 4,794 open postings, every one with a date

Date field: Greenhouse's first_published (17 companies) and Ashby's publishedAt (Notion, Plaid, Ramp)

Snapshot: 25 October 2026

An important caveat: "first published" is the date the posting went live. If a company closes a job and reposts it, the clock resets.…