Attribution
The skill vocabulary behind every match on this platform is not ours. Here is whose it is, under what terms, and precisely what we changed.
ESCO — European Skills, Competences, Qualifications and Occupations
- Publisher
- European Commission
Contains information from ESCO (European Skills, Competences, Qualifications and Occupations), © European Union, 2026, reused under CC BY 4.0.
What we changed
CC BY 4.0 requires changes to be indicated. These are all of them.
- Only the skills pillar is used; occupations and qualifications are not imported.
- Each concept is given an application-owned UUIDv7 identifier alongside its ESCO URI.
- Alternative labels from a separate public skills list are attached as additional aliases on ESCO concepts.
- A curated technology layer of 143 skills is added for concepts ESCO does not cover — Kubernetes, Terraform, Kafka, Figma, the Microsoft 365 applications and similar. Where ESCO already has the concept, the existing node is enriched rather than duplicated.
- Curated links saying one skill covers another are added — Laravel is built on PHP, Microsoft Word is word-processing software — so a claim of the first counts as the second. These are ours and are not part of ESCO.
- Classification edges into our own skill classes, with weights, are added. These are ours and are not part of ESCO.
- One concept (S1.5.3) could not be imported because the upstream API returned a malformed response; the gap is recorded in data/esco/gaps.json.
What we did not take
The ESCO and European Commission names, logos and trademarks are not reused — the Commission's reuse policy excludes industrial property rights, and nothing here implies endorsement by the Commission.
The weights are ours, and that matters
ESCO supplies the vocabulary and its hierarchy. It does not supply the skill classes, the position classes, the affinity matrix between them, or the classification weights — and those are what decide every score. Attributing the vocabulary correctly is also a way of being clear about where the Commission's work stops and our judgement starts.
The capability ladder is ours too, anchored on the Dreyfus model of skill acquisition, which is academic literature rather than a licensed product.