Start job-listing aggregation
Agree the source contract
Start with employer feeds, partner exports or APIs. Document which fields and refresh frequency each source permits, then choose a small employer and market sample.
Normalize one posting
Record source URL, employer, requisition ID, original apply URL, location, work mode, salary text, currency and publication or expiry dates where provided. Preserve missing fields as unknown.
Schedule freshness checks
Match repeat observations by source and stable identifier. Expire withdrawn jobs, merge duplicate syndications and review ambiguous matches before publishing the aggregated feed.
Three vacancy URLs, two feed decisions
A fictional feed combines a direct employer source and an approved board feed without treating every URL as a separate job.
Divide postings checked as open in the review window by the feed’s published posting count. Retain unknown and expired results separately and record the last successful check; a failed fetch is not evidence that a job closed.
What to measure: verified open-posting share
Divide postings checked as open in the review window by the feed’s published posting count. Retain unknown and expired results separately and record the last successful check; a failed fetch is not evidence that a job closed.
Prefer the employer record
A direct employer feed or contracted board API provides a clearer identity and update path than repeated public-page extraction. Keep the original application URL and stable requisition identifier whenever the source supplies them. Board URLs can change while the underlying vacancy remains the same.
Google’s JobPosting documentation provides useful field definitions and guidance for expired postings. Treat embedded structured data as an extraction input to validate against the visible page, not proof that a listing is current or that you have republication rights.
Preserve unknown values and work location
Store remote, hybrid and on-site labels exactly as supplied, along with any location eligibility. Remote does not necessarily mean globally available. Keep salary amount, currency, period and original text separate; leave a missing amount unknown rather than estimating it from another role.
Use employer and requisition ID as the first deduplication key. When those are absent, retain the candidate match and its evidence for review. Similar titles in different cities can be separate roles, while multiple boards can repeat one opening. Record every source instead of discarding provenance when records merge.
Keep a measured refresh queue
Use Residential Flex for a permitted country-level public-page sample, or Datacenter when the source accepts hosting-network traffic. Premium Residential fits a separate finer-location requirement. Choose the network for the source contract and observation you need.
Illustrative sizing: 5,000 posting checks averaging 100,000 response bytes produce 0.5 GB of response payload. Cache stable details, retain validators where supported and schedule changed or soon-expiring postings first. Measure the whole run’s billed usage before choosing the next package.
Publish vacancies without collecting applicants
Keep the collection focused on permitted vacancy fields. Exclude applicant records, resumes, private recruiter dashboards and account-only contact data. Follow the source agreement, robots instructions and request budget; stop on a challenge, refusal or rate limit instead of changing identities.
Honor takedowns and refresh or remove withdrawn listings through a documented queue. Do not submit applications or contact candidates from this monitoring workflow. The collection guide covers retained errors and source-wide rate controls.
When the result looks wrong
The observed country differs
Confirm the generated country selector and inspect a fresh connection with the IP diagnostic.
Next step: Keep the mismatch in the record and correct the route before the sample.
A response is incomplete
Compare the content type, required fields and source template with the extraction contract.
Next step: Quarantine the response and review the parser before adding it to the accepted dataset.
The source returns a refusal or rate limit
Inspect the response class and the source-wide request budget.
Next step: Pause the queue, honor Retry-After and resolve the access or budget issue before continuing.
Sources and further reading
Published by Databay Research Team. The worked example is an illustrative exercise. Documentation and existing test evidence support the technical guidance; their scope and dates remain attached to the relevant sections.