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Rediscovery: waking up a dormant ATS pool of 8,000 profiles.

An HR team had 8,000 profiles in its ATS for 5 years. 80% never re-contacted. Here is how Jemmo put 12% of them back into the pipeline in 3 weeks.

Guillaume LepercqGuillaume Lepercq · Founder & CEO · JemmoPublished on April 1, 2026
Rediscovery: waking up a dormant ATS pool of 8,000 profiles

The right candidate is not to be found.
They are to be woken up.

8,000 profiles, 80% asleep.

Talent pool audit at the start: 8,000 candidates stored for 5 years in the ATS, of which ~6,400 never re-contacted after their first application. Many were good profiles rejected for lack of a role at the time.

Rather than investing in more external sourcing, the team decided to test automatic rediscovery: let Jemmo re-qualify the pool continuously and surface the relevant profiles when a new role opens.

Setup in 2 days.

  1. ATS connection (Teamtailor) via OAuth — initial sync 4h
  2. Automatic rediscovery turned on for all tech roles
  3. Organization rules defined (boost vetted FRK, exclude clients under NDA)

No data moved. No process changed. The sourcer keeps using their ATS — Jemmo works in the background.

Results at 3 weeks.

  • ~960 profiles re-qualified and surfaced on open roles (12% of the pool)
  • 140 candidates re-engaged, 50% of whom replied (a response rate 4× higher than external cold sourcing)
  • 9 placements directly from rediscovery over the period
Immediate ROI. 9 placements at a marginal cost close to zero vs an average external sourcing cost of €4–8K per placement. That is €36–72K saved over the quarter.
Guillaume Lepercq
Founder & CEO · Jemmo

I have spent more than 10 years working on sourcing, matching and recruitment. Founder of Jemmo, an AI sourcing solution used by HR and recruiting teams, I share here my field experience, analyses and thoughts on how recruitment is evolving in the age of artificial intelligence.

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