Freshness and reposts · Trawle developers

Trawle reads every employer's board once a day. Comparing one day with the next tells it which jobs are new, which are still open and which have closed. That history is in five fields on every job.

Field	Meaning
`firstSeenAt`	First time Trawle saw the job under this id. `postedSince` and `posted` filter on this.
`lastSeenAt`	Last daily scan that saw it open on the employer's site. For open jobs, that's the latest scan.
`postedAt`	The employer's own "date posted", when their system has one. Often unreliable: some systems reset it on every edit.
`openSince`	First time any posting of this job was seen, reposts included. Days open count from here.
`repostCount`	Earlier postings of the same job under other ids, plus times it closed and reopened. `0` means original.
`closedAt`	When it disappeared from the employer's site; `null` while open.

Closures

When a job is gone from the employer's board, Trawle marks it closed (closedAt) and drops it from search within a day. GET /v1/jobs/{id} still returns it, so links you stored keep working. If a board can't be read on a given day (the site is down, say), its jobs are left as they were rather than closed.

Reposts

Some employers take a job down and post it again under a new id, so it looks fresh. Trawle links the new posting to the old one (same company, title and location) and counts it in repostCount. openSince carries over, so a job reposted every month still shows how long it has really been open.

JSON

{
  "id": "4419023",
  "title": "Senior Frontend Engineer",
  "company": { "slug": "lumen-labs", "name": "Lumen Labs", "domain": "lumenlabs.example" },
  "role": { "slug": "frontend-engineer", "name": "Frontend Engineer" },
  "family": { "slug": "software-engineering", "name": "Software Engineering" },
  "locations": [{ "id": 2618425, "name": "Copenhagen", "country": "DK" }],
  "workplace": "hybrid",
  "remoteScope": null,
  "seniority": "senior",
  "employmentType": "full_time",
  "salary": null,
  "firstSeenAt": "2026-10-30T06:12:00.000Z",
  "lastSeenAt": "2026-10-31T06:12:00.000Z",
  "postedAt": "2026-10-29T00:00:00.000Z",
  "openSince": "2026-09-14T06:10:00.000Z",
  "repostCount": 1,
  "closedAt": null,
  "applyUrl": "https://job-boards.greenhouse.io/lumenlabs/jobs/7712001",
  "url": "https://trawle.com/jobs/4419023"
}

This posting is two days old (firstSeenAt), but the job has been open since September 14 (openSince) and was posted once before.

To skip reposts in a search, use query.reposts: "hide"; to find only them, "only".

History

Trawle's own history starts at historyStart in GET /v1/stats. For jobs that were already open then, openSince is the first day Trawle saw them, and postedAt is the best hint of their real age.